CVE-2022-1473

The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of service. Also traversing the empty hash table entries will take increasingly more time. Typically such long lived processes might be TLS clients or TLS servers configured to accept client certificate authentication. The function was added in the OpenSSL 3.0 version thus older releases are not affected by the issue. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).

The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of service. Also traversing the empty hash table entries will take increasingly more time. Typically such long lived processes might be TLS clients or TLS servers configured to accept client certificate authentication. The function was added in the OpenSSL 3.0 version thus older releases are not affected by the issue. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).

The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occupied by the removed hash table entries.

This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of service. Also traversing the empty hash table entries will take increasingly more time.

Typically such long lived processes might be TLS clients or TLS servers configured to accept client certificate authentication.

The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of service. Also traversing the empty hash table entries will take increasingly more time. Typically such long lived processes might be TLS clients or TLS servers configured to accept client certificate authentication. The function was added in the OpenSSL 3.0 version thus older releases are not affected by the issue. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).

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: c_rehash script allows command injection (CVE-2022-1292)
• openssl: Signer certificate verification returns inaccurate response when using OCSP_NOCHECKS (CVE-2022-1343)
• openssl: OPENSSL_LH_flush() breaks reuse of memory (CVE-2022-1473)
• openssl: the c_rehash script allows command injection (CVE-2022-2068)
• openssl: AES OCB fails to encrypt some bytes (CVE-2022-2097) 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. Bug Fix(es):
• openssl occasionally sends internal error to gnutls when using FFDHE (BZ#2080323)
• openssl req defaults to 3DES (BZ#2085499)
• OpenSSL accepts custom elliptic curve parameters when p is large [almalinux-9] (BZ#2085508)
• OpenSSL mustn't work with ECDSA with explicit curve parameters in FIPS mode (BZ#2085521)
• openssl s_server -groups secp256k1 in FIPS fails because X25519/X448 (BZ#2086554)
• Converting FIPS power-on self test to KAT (BZ#2086866)
• Small RSA keys work for some operations in FIPS mode (BZ#2091938)
• FIPS provider doesn't block RSA encryption for key transport (BZ#2091977)
• OpenSSL testsuite certificates expired (BZ#2095696)
• [IBM 9.1 HW OPT] POWER10 performance enhancements for cryptography: OpenSSL (BZ#2103044)
• [FIPS lab review] self-test (BZ#2112978)
• [FIPS lab review] DH tuning (BZ#2115856)
• [FIPS lab review] EC tuning (BZ#2115857)
• [FIPS lab review] RSA tuning (BZ#2115858)
• [FIPS lab review] RAND tuning (BZ#2115859)
• [FIPS lab review] zeroization (BZ#2115861)
• [FIPS lab review] HKDF limitations (BZ#2118388)

• SECURITY UPDATE: Improper Neutralization
  • debian/patches/CVE-2022-1292.patch: restrict using shell to invoke openssl due to possible privilege escalation
  • debian/patches/CVE-2022-1473.patch: fix bug OPENSSL_LH_flush() memory releasing leading to DoS
  • CVE-2022-1292
  • CVE-2022-1473

• SECURITY REGRESSION: Invalid fix for CVE-2022-1473
  • debian/patches/CVE-2022-1473.patch: removing unnecessary patch since this version is actually not affected
• SECURITY UPDATE: c_rehash script allows command injection
  • debian/patches/CVE-2022-1292.patch: switch to upstream patch, and apply it before c_rehash-compat.patch
  • debian/patches/CVE-2022-2068.patch: fix file operations in tools/c_rehash.in
  • debian/patches/c_rehash-compat.patch: updated patch to apply after the security updates
  • CVE-2022-2068

These are all security issues fixed in the libopenssl-3-devel-3.0.5-1.1 package on the GA media of openSUSE Tumbleweed.

This update for openssl-3 fixes the following issues:

• CVE-2022-2068: Fixed more shell code injection issues in c_rehash. (bsc#1200550)
• CVE-2022-1292: Properly sanitise shell metacharacters in c_rehash script. (bsc#1199166)
• CVE-2022-1343: Fixed incorrect signature verification in OCSP_basic_verify (bsc#1199167).
• CVE-2022-2097: Fixed partial missing encryption in AES OCB mode (bsc#1201099).
• CVE-2022-1434: Fixed incorrect MAC key used in the RC4-MD5 ciphersuite (bsc#1199168).
• CVE-2022-1473: Fixed resource leakage when decoding certificates and keys (bsc#1199169).

Elison Niven discovered that OpenSSL incorrectly handled the c_rehash script. A local attacker could possibly use this issue to execute arbitrary commands when c_rehash is run. (CVE-2022-1292)

Raul Metsma discovered that OpenSSL incorrectly verified certain response signing certificates. A remote attacker could possibly use this issue to spoof certain response signing certificates. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-1343)

Tom Colley discovered that OpenSSL used the incorrect MAC key in the RC4-MD5 ciphersuite. In non-default configurations were RC4-MD5 is enabled, a remote attacker could possibly use this issue to modify encrypted communications. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-1434)

Aliaksei Levin discovered that OpenSSL incorrectly handled resources when decoding certificates and keys. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-1473)

USN-5402-1 fixed several vulnerabilities in OpenSSL. This update provides the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

Elison Niven discovered that OpenSSL incorrectly handled the c_rehash script. A local attacker could possibly use this issue to execute arbitrary commands when c_rehash is run. (CVE-2022-1292)

Aliaksei Levin discovered that OpenSSL incorrectly handled resources when decoding certificates and keys. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-1473)