CVE-2021-3449

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols.

Security Fix(es):

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).(CVE-2021-3449)

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: NULL pointer dereference in signature_algorithms processing (CVE-2021-3449)

• openssl: CA certificate check bypass with X509_V_FLAG_X509_STRICT (CVE-2021-3450)

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.

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack.

A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue.

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. (CVE-2021-3449).

The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. (CVE-2021-3450).

This update for openssl-1_1 fixes the security issue:

• CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension but includes a signature_algorithms_cert extension, then a NULL pointer dereference will result, leading to a crash and a denial of service attack. OpenSSL TLS clients are not impacted by this issue. [bsc#1183852]

This update was imported from the SUSE:SLE-15-SP2:Update update project.

This update for nodejs12 fixes the following issues:

• update to 12.22.2:
• CVE-2021-22918: Out of bounds read (bsc#1187973)
• CVE-2021-23362: ssri Regular Expression Denial of Service and hosted-git-info (bsc#1187977)
• CVE-2021-27290: Regular Expression Denial of Service (bsc#1187976)
• CVE-2021-3450: OpenSSL - CA certificate check bypass with X509_V_FLAG_X509_STRICT (bsc#1183851)
• CVE-2021-3449: OpenSSL - NULL pointer deref in signature_algorithms processing (bsc#1183852)
• CVE-2020-7774: npm - Update y18n to fix Prototype-Pollution (bsc#1184450)

This update was imported from the SUSE:SLE-15-SP2:Update update project.

This update for nodejs10 fixes the following issues:

Update nodejs10 to 10.24.1.

Including fixes for

• CVE-2021-22918: libuv upgrade - Out of bounds read (bsc#1187973)
• CVE-2021-27290: ssri Regular Expression Denial of Service (bsc#1187976)
• CVE-2021-23362: hosted-git-info Regular Expression Denial of Service (bsc#1187977)
• CVE-2020-7774: y18n Prototype Pollution (bsc#1184450)
• CVE-2021-3450: OpenSSL - CA certificate check bypass with X509_V_FLAG_X509_STRICT (bsc#1183851)
• CVE-2021-3449: OpenSSL - NULL pointer deref in signature_algorithms processing (bsc#1183852)
• reduce memory footprint of test-worker-stdio (bsc#1183155)

This update was imported from the SUSE:SLE-15:Update update project.

This update for nodejs12 fixes the following issues:

• update to 12.22.2:
• CVE-2021-22918: Out of bounds read (bsc#1187973)
• CVE-2021-23362: ssri Regular Expression Denial of Service and hosted-git-info (bsc#1187977)
• CVE-2021-27290: Regular Expression Denial of Service (bsc#1187976)
• CVE-2021-3450: OpenSSL - CA certificate check bypass with X509_V_FLAG_X509_STRICT (bsc#1183851)
• CVE-2021-3449: OpenSSL - NULL pointer deref in signature_algorithms processing (bsc#1183852)
• CVE-2020-7774: npm - Update y18n to fix Prototype-Pollution (bsc#1184450)

This update for nodejs10 fixes the following issues:

Update nodejs10 to 10.24.1.

Including fixes for

• CVE-2021-22918: libuv upgrade - Out of bounds read (bsc#1187973)
• CVE-2021-27290: ssri Regular Expression Denial of Service (bsc#1187976)
• CVE-2021-23362: hosted-git-info Regular Expression Denial of Service (bsc#1187977)
• CVE-2020-7774: y18n Prototype Pollution (bsc#1184450)
• CVE-2021-3450: OpenSSL - CA certificate check bypass with X509_V_FLAG_X509_STRICT (bsc#1183851)
• CVE-2021-3449: OpenSSL - NULL pointer deref in signature_algorithms processing (bsc#1183852)
• reduce memory footprint of test-worker-stdio (bsc#1183155)

These are all security issues fixed in the matrix-synapse-1.43.0-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the libopenssl-1_1-devel-1.1.1l-1.2 package on the GA media of openSUSE Tumbleweed.

This update for openssl-1_1 fixes the following security issue:

• CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension but includes a signature_algorithms_cert extension, then a NULL pointer dereference will result, leading to a crash and a denial of service attack. OpenSSL TLS clients are not impacted by this issue. [bsc#1183852]

This update for openssl-1_1 fixes the security issue:

• CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension but includes a signature_algorithms_cert extension, then a NULL pointer dereference will result, leading to a crash and a denial of service attack. OpenSSL TLS clients are not impacted by this issue. [bsc#1183852]

This update for openssl-1_1 fixes the security issue:

• CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension but includes a signature_algorithms_cert extension, then a NULL pointer dereference will result, leading to a crash and a denial of service attack. OpenSSL TLS clients are not impacted by this issue. [bsc#1183852]

This update for nodejs10 fixes the following issues:

Update nodejs10 to 10.24.1.

Including fixes for

• CVE-2021-22918: libuv upgrade - Out of bounds read (bsc#1187973)
• CVE-2021-27290: ssri Regular Expression Denial of Service (bsc#1187976)
• CVE-2021-23362: hosted-git-info Regular Expression Denial of Service (bsc#1187977)
• CVE-2020-7774: y18n Prototype Pollution (bsc#1184450)
• CVE-2021-3450: OpenSSL - CA certificate check bypass with X509_V_FLAG_X509_STRICT (bsc#1183851)
• CVE-2021-3449: OpenSSL - NULL pointer deref in signature_algorithms processing (bsc#1183852)

This update for nodejs12 fixes the following issues:

• update to 12.22.2:
• CVE-2021-22918: Out of bounds read (bsc#1187973)
• CVE-2021-23362: ssri Regular Expression Denial of Service and hosted-git-info (bsc#1187977)
• CVE-2021-27290: Regular Expression Denial of Service (bsc#1187976)
• CVE-2021-3450: OpenSSL - CA certificate check bypass with X509_V_FLAG_X509_STRICT (bsc#1183851)
• CVE-2021-3449: OpenSSL - NULL pointer deref in signature_algorithms processing (bsc#1183852)
• CVE-2020-7774: npm - Update y18n to fix Prototype-Pollution (bsc#1184450)

This update for nodejs12 fixes the following issues:

• update to 12.22.2:
• CVE-2021-22918: Out of bounds read (bsc#1187973)
• CVE-2021-23362: ssri Regular Expression Denial of Service and hosted-git-info (bsc#1187977)
• CVE-2021-27290: Regular Expression Denial of Service (bsc#1187976)
• CVE-2021-3450: OpenSSL - CA certificate check bypass with X509_V_FLAG_X509_STRICT (bsc#1183851)
• CVE-2021-3449: OpenSSL - NULL pointer deref in signature_algorithms processing (bsc#1183852)
• CVE-2020-7774: npm - Update y18n to fix Prototype-Pollution (bsc#1184450)

This update for nodejs10 fixes the following issues:

Update nodejs10 to 10.24.1.

Including fixes for

• CVE-2021-22918: libuv upgrade - Out of bounds read (bsc#1187973)
• CVE-2021-27290: ssri Regular Expression Denial of Service (bsc#1187976)
• CVE-2021-23362: hosted-git-info Regular Expression Denial of Service (bsc#1187977)
• CVE-2020-7774: y18n Prototype Pollution (bsc#1184450)
• CVE-2021-3450: OpenSSL - CA certificate check bypass with X509_V_FLAG_X509_STRICT (bsc#1183851)
• CVE-2021-3449: OpenSSL - NULL pointer deref in signature_algorithms processing (bsc#1183852)
• reduce memory footprint of test-worker-stdio (bsc#1183155)

It was discovered that OpenSSL incorrectly handled certain renegotiation ClientHello messages. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service.

It was discovered that the PostgresQL planner could create incorrect plans in certain circumstances. A remote attacker could use this issue to cause PostgreSQL to crash, resulting in a denial of service, or possibly obtain sensitive information from memory. This issue only affected Ubuntu 20.04 LTS and Ubuntu 21.04. (CVE-2021-3677)

It was discovered that PostgreSQL incorrectly handled certain SSL renegotiation ClientHello messages from clients. A remote attacker could possibly use this issue to cause PostgreSQL to crash, resulting in a denial of service. (CVE-2021-3449)