CVE-2025-11187

Issue summary: PBMAC1 parameters in PKCS#12 files are missing validation which can trigger a stack-based buffer overflow, invalid pointer or NULL pointer dereference during MAC verification.

Impact summary: The stack buffer overflow or NULL pointer dereference may cause a crash leading to Denial of Service for an application that parses untrusted PKCS#12 files. The buffer overflow may also potentially enable code execution depending on platform mitigations.

When verifying a PKCS#12 file that uses PBMAC1 for the MAC, the PBKDF2 salt and keylength parameters from the file are used without validation. If the value of keylength exceeds the size of the fixed stack buffer used for the derived key (64 bytes), the key derivation will overflow the buffer. The overflow length is attacker-controlled. Also, if the salt parameter is not an OCTET STRING type this can lead to invalid or NULL pointer dereference.

Exploiting this issue requires a user or application to process a maliciously crafted PKCS#12 file. It is uncommon to accept untrusted PKCS#12 files in applications as they are usually used to store private keys which are trusted by definition. For this reason the issue was assessed as Moderate severity.

The FIPS modules in 3.6, 3.5 and 3.4 are not affected by this issue, as PKCS#12 processing is outside the OpenSSL FIPS module boundary.

OpenSSL 3.6, 3.5 and 3.4 are vulnerable to this issue.

OpenSSL 3.3, 3.0, 1.1.1 and 1.0.2 are not affected by this issue as they do not support PBMAC1 in PKCS#12.

Issue summary: PBMAC1 parameters in PKCS#12 files are missing validation which can trigger a stack-based buffer overflow, invalid pointer or NULL pointer dereference during MAC verification. Impact summary: The stack buffer overflow or NULL pointer dereference may cause a crash leading to Denial of Service for an application that parses untrusted PKCS#12 files. The buffer overflow may also potentially enable code execution depending on platform mitigations. When verifying a PKCS#12 file that uses PBMAC1 for the MAC, the PBKDF2 salt and keylength parameters from the file are used without validation. If the value of keylength exceeds the size of the fixed stack buffer used for the derived key (64 bytes), the key derivation will overflow the buffer. The overflow length is attacker-controlled. Also, if the salt parameter is not an OCTET STRING type this can lead to invalid or NULL pointer dereference. Exploiting this issue requires a user or application to process a maliciously crafted PKCS#12 file. It is uncommon to accept untrusted PKCS#12 files in applications as they are usually used to store private keys which are trusted by definition. For this reason the issue was assessed as Moderate severity. The FIPS modules in 3.6, 3.5 and 3.4 are not affected by this issue, as PKCS#12 processing is outside the OpenSSL FIPS module boundary. OpenSSL 3.6, 3.5 and 3.4 are vulnerable to this issue. OpenSSL 3.3, 3.0, 1.1.1 and 1.0.2 are not affected by this issue as they do not support PBMAC1 in PKCS#12.

Issue summary: PBMAC1 parameters in PKCS#12 files are missing validation which can trigger a stack-based buffer overflow, invalid pointer or NULL pointer dereference during MAC verification.

Impact summary: The stack buffer overflow or NULL pointer dereference may cause a crash leading to Denial of Service for an application that parses untrusted PKCS#12 files. The buffer overflow may also potentially enable code execution depending on platform mitigations.

When verifying a PKCS#12 file that uses PBMAC1 for the MAC, the PBKDF2 salt and keylength parameters from the file are used without validation. If the value of keylength exceeds the size of the fixed stack buffer used for the derived key (64 bytes), the key derivation will overflow the buffer. The overflow length is attacker-controlled. Also, if the salt parameter is not an OCTET STRING type this can lead to invalid or NULL pointer dereference.

Exploiting this issue requires a user or application to process a maliciously crafted PKCS#12 file. It is uncommon to accept untrusted PKCS#12 files in applications as they are usually used to store private keys which are trusted by definition. For this reason the issue was assessed as Moderate severity.

The FIPS modules in 3.6, 3.5 and 3.4 are not affected by this issue, as PKCS#12 processing is outside the OpenSSL FIPS module boundary.

OpenSSL 3.6, 3.5 and 3.4 are vulnerable to this issue.

OpenSSL 3.3, 3.0, 1.1.1 and 1.0.2 are not affected by this issue as they do not support PBMAC1 in PKCS#12.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

• openssl: OpenSSL: Arbitrary code execution or denial of service through crafted PKCS#12 file (CVE-2025-11187)

• openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing (CVE-2025-15467)

• openssl: OpenSSL: Denial of Service via NULL pointer dereference in QUIC protocol handling (CVE-2025-15468)

• openssl: OpenSSL: Data integrity bypass in openssl dgst command due to silent truncation (CVE-2025-15469)

• openssl: OpenSSL: Denial of Service due to excessive memory allocation in TLS 1.3 certificate compression (CVE-2025-66199)

• openssl: OpenSSL: Denial of Service due to out-of-bounds write in BIO filter (CVE-2025-68160)

• openssl: OpenSSL: Information disclosure and data tampering via specific low-level OCB encryption/decryption calls (CVE-2025-69418)

• openssl: OpenSSL: Arbitrary code execution due to out-of-bounds write in PKCS#12 processing (CVE-2025-69419)

• openssl: OpenSSL: Denial of Service via malformed PKCS#12 file processing (CVE-2025-69421)

• openssl: OpenSSL: Denial of Service via malformed TimeStamp Response (CVE-2025-69420)

• openssl: OpenSSL: Denial of Service due to type confusion in PKCS#12 file processing (CVE-2026-22795)

• openssl: OpenSSL: Denial of Service via type confusion in PKCS#7 signature verification (CVE-2026-22796)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

• openssl: OpenSSL: Arbitrary code execution or denial of service through crafted PKCS#12 file (CVE-2025-11187)

• openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing (CVE-2025-15467)

• openssl: OpenSSL: Denial of Service via NULL pointer dereference in QUIC protocol handling (CVE-2025-15468)

• openssl: OpenSSL: Data integrity bypass in openssl dgst command due to silent truncation (CVE-2025-15469)

• openssl: OpenSSL: Denial of Service due to excessive memory allocation in TLS 1.3 certificate compression (CVE-2025-66199)

• openssl: OpenSSL: Denial of Service due to out-of-bounds write in BIO filter (CVE-2025-68160)

• openssl: OpenSSL: Information disclosure and data tampering via specific low-level OCB encryption/decryption calls (CVE-2025-69418)

• openssl: OpenSSL: Arbitrary code execution due to out-of-bounds write in PKCS#12 processing (CVE-2025-69419)

• openssl: OpenSSL: Denial of Service via malformed PKCS#12 file processing (CVE-2025-69421)

• openssl: OpenSSL: Denial of Service via malformed TimeStamp Response (CVE-2025-69420)

• openssl: OpenSSL: Denial of Service due to type confusion in PKCS#12 file processing (CVE-2026-22795)

• openssl: OpenSSL: Denial of Service via type confusion in PKCS#7 signature verification (CVE-2026-22796)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Issue summary: PBMAC1 parameters in PKCS#12 files are missing validation which can trigger a stack-based buffer overflow, invalid pointer or NULL pointer dereference during MAC verification. Impact summary: The stack buffer overflow or NULL pointer dereference may cause a crash leading to Denial of Service for an application that parses untrusted PKCS#12 files. The buffer overflow may also potentially enable code execution depending on platform mitigations. When verifying a PKCS#12 file that uses PBMAC1 for the MAC, the PBKDF2 salt and keylength parameters from the file are used without validation. If the value of keylength exceeds the size of the fixed stack buffer used for the derived key (64 bytes), the key derivation will overflow the buffer. The overflow length is attacker-controlled. Also, if the salt parameter is not an OCTET STRING type this can lead to invalid or NULL pointer dereference. Exploiting this issue requires a user or application to process a maliciously crafted PKCS#12 file. It is uncommon to accept untrusted PKCS#12 files in applications as they are usually used to store private keys which are trusted by definition. For this reason the issue was assessed as Moderate severity. The FIPS modules in 3.6, 3.5 and 3.4 are not affected by this issue, as PKCS#12 processing is outside the OpenSSL FIPS module boundary. OpenSSL 3.6, 3.5 and 3.4 are vulnerable to this issue. OpenSSL 3.3, 3.0, 1.1.1 and 1.0.2 are not affected by this issue as they do not support PBMAC1 in PKCS#12.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

• openssl: OpenSSL: Arbitrary code execution or denial of service through crafted PKCS#12 file (CVE-2025-11187)
• openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing (CVE-2025-15467)
• openssl: OpenSSL: Denial of Service via NULL pointer dereference in QUIC protocol handling (CVE-2025-15468)
• openssl: OpenSSL: Data integrity bypass in openssl dgst command due to silent truncation (CVE-2025-15469)
• openssl: OpenSSL: Denial of Service due to excessive memory allocation in TLS 1.3 certificate compression (CVE-2025-66199)
• openssl: OpenSSL: Denial of Service due to out-of-bounds write in BIO filter (CVE-2025-68160)
• openssl: OpenSSL: Information disclosure and data tampering via specific low-level OCB encryption/decryption calls (CVE-2025-69418)
• openssl: OpenSSL: Arbitrary code execution due to out-of-bounds write in PKCS#12 processing (CVE-2025-69419)
• openssl: OpenSSL: Denial of Service via malformed PKCS#12 file processing (CVE-2025-69421)
• openssl: OpenSSL: Denial of Service via malformed TimeStamp Response (CVE-2025-69420)
• openssl: OpenSSL: Denial of Service due to type confusion in PKCS#12 file processing (CVE-2026-22795)
• openssl: OpenSSL: Denial of Service via type confusion in PKCS#7 signature verification (CVE-2026-22796)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

• openssl: OpenSSL: Arbitrary code execution or denial of service through crafted PKCS#12 file (CVE-2025-11187)
• openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing (CVE-2025-15467)
• openssl: OpenSSL: Denial of Service via NULL pointer dereference in QUIC protocol handling (CVE-2025-15468)
• openssl: OpenSSL: Data integrity bypass in openssl dgst command due to silent truncation (CVE-2025-15469)
• openssl: OpenSSL: Denial of Service due to excessive memory allocation in TLS 1.3 certificate compression (CVE-2025-66199)
• openssl: OpenSSL: Denial of Service due to out-of-bounds write in BIO filter (CVE-2025-68160)
• openssl: OpenSSL: Information disclosure and data tampering via specific low-level OCB encryption/decryption calls (CVE-2025-69418)
• openssl: OpenSSL: Arbitrary code execution due to out-of-bounds write in PKCS#12 processing (CVE-2025-69419)
• openssl: OpenSSL: Denial of Service via malformed PKCS#12 file processing (CVE-2025-69421)
• openssl: OpenSSL: Denial of Service via malformed TimeStamp Response (CVE-2025-69420)
• openssl: OpenSSL: Denial of Service due to type confusion in PKCS#12 file processing (CVE-2026-22795)
• openssl: OpenSSL: Denial of Service via type confusion in PKCS#7 signature verification (CVE-2026-22796)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

These are all security issues fixed in the libopenssl-3-devel-3.5.3-2.1 package on the GA media of openSUSE Tumbleweed.

This update for openssl-3 fixes the following issues:

Security fixes:

• CVE-2025-11187: Improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256829).
• CVE-2025-15467: Stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256830).
• CVE-2025-15468: NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256831).
• CVE-2025-15469: "openssl dgst" one-shot codepath silently truncates inputs >16MB (bsc#1256832).
• CVE-2025-66199: TLS 1.3 CompressedCertificate excessive memory allocation (bsc#1256833).
• CVE-2025-68160: Heap out-of-bounds write in BIO_f_linebuffer on short writes (bsc#1256834).
• CVE-2025-69418: Unauthenticated/unencrypted trailing bytes with low-level OCB function calls (bsc#1256835).
• CVE-2025-69419: Out of bounds write in PKCS12_get_friendlyname() UTF-8 conversion (bsc#1256836).
• CVE-2025-69420: Missing ASN1_TYPE validation in TS_RESP_verify_response() function (bsc#1256837).
• CVE-2025-69421: NULL Pointer Dereference in PKCS12_item_decrypt_d2i_ex function (bsc#1256838).
• CVE-2026-22795: Missing ASN1_TYPE validation in PKCS#12 parsing (bsc#1256839).
• CVE-2026-22796: ASN1_TYPE Type Confusion in the PKCS7_digest_from_attributes() function (bsc#1256840).

Other fixes:

• Enable livepatching support for ppc64le (bsc#1257274).

This update for openssl-3-x86_64-v3-livepatches fixes the following issues:

Changes in openssl-3-x86_64-v3-livepatches:

• Add package for libopenssl3-x86-64-v3-3.5.0 (bsc#1259271).

Fixed:

• CVE-2025-11187: Fixed Improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256878).
• CVE-2025-15467: Fixed Stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256876).
• CVE-2025-15468: Fixed NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256880).
• CVE-2025-9230: Fixed Out-of-bounds read & write in RFC 3211 KEK Unwrap (CVE-2025-9230) (bsc#1250410).

This update for openssl-3 fixes the following issues:

Security fixes:

• CVE-2025-11187: Improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256829).
• CVE-2025-15467: Stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256830).
• CVE-2025-15468: NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256831).
• CVE-2025-15469: "openssl dgst" one-shot codepath silently truncates inputs >16MB (bsc#1256832).
• CVE-2025-66199: TLS 1.3 CompressedCertificate excessive memory allocation (bsc#1256833).
• CVE-2025-68160: Heap out-of-bounds write in BIO_f_linebuffer on short writes (bsc#1256834).
• CVE-2025-69418: Unauthenticated/unencrypted trailing bytes with low-level OCB function calls (bsc#1256835).
• CVE-2025-69419: Out of bounds write in PKCS12_get_friendlyname() UTF-8 conversion (bsc#1256836).
• CVE-2025-69420: Missing ASN1_TYPE validation in TS_RESP_verify_response() function (bsc#1256837).
• CVE-2025-69421: NULL Pointer Dereference in PKCS12_item_decrypt_d2i_ex function (bsc#1256838).
• CVE-2026-22795: Missing ASN1_TYPE validation in PKCS#12 parsing (bsc#1256839).
• CVE-2026-22796: ASN1_TYPE Type Confusion in the PKCS7_digest_from_attributes() function (bsc#1256840).

Other fixes:

• Enable livepatching support for ppc64le (bsc#1257274).

This update for openssl-3 fixes the following issues:

Security fixes:

• CVE-2025-11187: Improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256829).
• CVE-2025-15467: Stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256830).
• CVE-2025-15468: NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256831).
• CVE-2025-15469: "openssl dgst" one-shot codepath silently truncates inputs >16MB (bsc#1256832).
• CVE-2025-66199: TLS 1.3 CompressedCertificate excessive memory allocation (bsc#1256833).
• CVE-2025-68160: Heap out-of-bounds write in BIO_f_linebuffer on short writes (bsc#1256834).
• CVE-2025-69418: Unauthenticated/unencrypted trailing bytes with low-level OCB function calls (bsc#1256835).
• CVE-2025-69419: Out of bounds write in PKCS12_get_friendlyname() UTF-8 conversion (bsc#1256836).
• CVE-2025-69420: Missing ASN1_TYPE validation in TS_RESP_verify_response() function (bsc#1256837).
• CVE-2025-69421: NULL Pointer Dereference in PKCS12_item_decrypt_d2i_ex function (bsc#1256838).
• CVE-2026-22795: Missing ASN1_TYPE validation in PKCS#12 parsing (bsc#1256839).
• CVE-2026-22796: ASN1_TYPE Type Confusion in the PKCS7_digest_from_attributes() function (bsc#1256840).

Other fixes:

• Enable livepatching support for ppc64le (bsc#1257274).

This update for openssl-3-livepatches fixes the following issues:

• CVE-2025-11187: Fixed improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256878).
• CVE-2025-15467: Fixed stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256876).
• CVE-2025-15468: Fixed NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256880).
• CVE-2025-9230: Fixed out-of-bounds read & write in RFC 3211 KEK Unwrap (bsc#1250410).

This update for openssl-3-livepatches fixes the following issues:

• CVE-2025-11187: Fixed improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256878).
• CVE-2025-15467: Fixed stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256876).
• CVE-2025-15468: Fixed NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256880).
• CVE-2025-9230: Fixed out-of-bounds read & write in RFC 3211 KEK Unwrap (bsc#1250410).

This update for openssl-3-x86_64-v3-livepatches fixes the following issues:

Changes in openssl-3-x86_64-v3-livepatches:

• Add package for libopenssl3-x86-64-v3-3.5.0 (bsc#1259271).

Fixed:

• CVE-2025-11187: Fixed Improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256878).
• CVE-2025-15467: Fixed Stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256876).
• CVE-2025-15468: Fixed NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256880).
• CVE-2025-9230: Fixed Out-of-bounds read & write in RFC 3211 KEK Unwrap (CVE-2025-9230) (bsc#1250410).

This update for openssl-3-livepatches fixes the following issues

• CVE-2025-11187: Improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256878).
• CVE-2025-15467: Stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256876).
• CVE-2025-15468: NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256880).
• CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7_verify() (bsc#1266389, bsc#1266357).

This update for openssl-3-livepatches fixes the following issues:

• CVE-2025-11187: Improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256878).
• CVE-2025-15467: Stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256876).
• CVE-2025-15468: NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256880).
• CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7_verify() (bsc#1266389, bsc#1266357).

This update for openssl-3-livepatches fixes the following issues

• CVE-2025-11187: Improper validation of PBMAC1 parameters in PKCS#12 MAC verification (bsc#1256878).
• CVE-2025-15467: Stack buffer overflow in CMS AuthEnvelopedData parsing (bsc#1256876).
• CVE-2025-15468: NULL dereference in SSL_CIPHER_find() function on unknown cipher ID (bsc#1256880).
• CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7_verify() (bsc#1266389, bsc#1266357).

Stanislav Fort, Petr Šimeček, and Hamza discovered that OpenSSL incorrectly validated PBMAC1 parameters when doing PKCS#12 MAC verification. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 25.10. (CVE-2025-11187)

Stanislav Fort discovered that OpenSSL incorrectly parsed CMS AuthEnvelopedData messages. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2025-15467)

Stanislav Fort discovered that OpenSSL incorrectly handled memory in the SSL_CIPHER_find() function. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 25.10. (CVE-2025-15468)

Stanislav Fort discovered that the OpenSSL "openssl dgst" command line tool incorrectly truncated data to 16MB. An attacker could posibly use this issue to hide unauthenticated data beyond the 16MB limit. This issue only affected Ubuntu 25.10. (CVE-2025-15469)

Tomas Dulka and Stanislav Fort discovered that OpenSSL incorrectly handled memory with TLS 1.3 connections using certificate compression. An attacker could possibly use this issue to consume resources, leading to a denial of service. This issue only affected Ubuntu 25.10. (CVE-2025-66199)

Petr Simecek and Stanislav Fort discovered that OpenSSL incorrectly handled memory when writing large data into a BIO chain. An attacker could possibly use this issue to consume resources, leading to a denial of service. (CVE-2025-68160)

Stanislav Fort discovered that the OpenSSL OCB API could incorrectly leave final partial blocks unencrypted and unauthenticated. An attacker could possibly use this issue to read or tamper with the affected final bytes. (CVE-2025-69418)

Stanislav Fort discovered that OpenSSL incorrectly handled the PKCS12_get_friendlyname() utf-8 conversion. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2025-69419)

Luigino Camastra discovered that OpenSSL incorrectly handled ASN1_TYPE validation in the TS_RESP_verify_response() function. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2025-69420)

Luigino Camastra discovered that OpenSSL incorrectly handled memory in the PKCS12_item_decrypt_d2i_ex function. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2025-69421)

Luigino Camastra discovered that OpenSSL incorrectly handled ASN1_TYPE validation in PKCS#12 parsing. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-22795)

Luigino Camastra discovered that OpenSSL incorrectly handled ASN1_TYPE validation in the PKCS7_digest_from_attributes() function. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-22796)