Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3 if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured and the default anti-replay protection is in use). In this case, under certain conditions, the session cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario for this failure to force a Denial of Service. It may also happen by accident in normal operation. This issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in 3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue.

It is, therefore, affected by a vulnerability as referenced in the ALAS2-2024-2539 advisory.

  - Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when     processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to     trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3     if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured     and the default anti-replay protection is in use). In this case, under certain conditions, the session     cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache     will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario     for this failure to force a Denial of Service. It may also happen by accident in normal operation. This     issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in     3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue.
    (CVE-2024-2511)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:1633-1 advisory.

  - Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when     processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to     trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3     if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured     and the default anti-replay protection is in use). In this case, under certain conditions, the session     cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache     will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario     for this failure to force a Denial of Service. It may also happen by accident in normal operation. This     issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in     3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue.
    (CVE-2024-2511)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:1634-1 advisory.

  - Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when     processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to     trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3     if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured     and the default anti-replay protection is in use). In this case, under certain conditions, the session     cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache     will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario     for this failure to force a Denial of Service. It may also happen by accident in normal operation. This     issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in     3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue.
    (CVE-2024-2511)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 7c217849-f7d7-11ee-a490-84a93843eb75 advisory.

  - Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when     processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to     trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3     if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured     and the default anti-replay protection is in use). In this case, under certain conditions, the session     cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache     will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario     for this failure to force a Denial of Service. It may also happen by accident in normal operation. This     issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in     3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue.
    (CVE-2024-2511)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of OpenSSL installed on the remote host is prior to 3.1.6. It is, therefore, affected by a vulnerability as referenced in the 3.1.6 advisory.

  - Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when     processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to     trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3     if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured     and the default anti-replay protection is in use). In this case, under certain conditions, the session     cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache     will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario     for this failure to force a Denial of Service. It may also happen by accident in normal operation. This     issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in     3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue. Found     by Manish Patidar (Hewlett Packard Enterprise). Fix developed by Matt Caswell. Fixed in OpenSSL 3.0.14     (Affected since 3.0.0). (CVE-2024-2511)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of OpenSSL installed on the remote host is prior to 3.2.2. It is, therefore, affected by a vulnerability as referenced in the 3.2.2 advisory.

  - Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when     processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to     trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3     if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured     and the default anti-replay protection is in use). In this case, under certain conditions, the session     cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache     will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario     for this failure to force a Denial of Service. It may also happen by accident in normal operation. This     issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in     3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue. Found     by Manish Patidar (Hewlett Packard Enterprise). Fix developed by Matt Caswell. Fixed in OpenSSL 3.2.2     (Affected since 3.2.0). (CVE-2024-2511)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of OpenSSL installed on the remote host is prior to 3.0.14. It is, therefore, affected by a vulnerability as referenced in the 3.0.14 advisory.

  - Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when     processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to     trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3     if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured     and the default anti-replay protection is in use). In this case, under certain conditions, the session     cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache     will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario     for this failure to force a Denial of Service. It may also happen by accident in normal operation. This     issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in     3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue. Found     by Manish Patidar (Hewlett Packard Enterprise). Fix developed by Matt Caswell. Fixed in OpenSSL 3.0.14     (Affected since 3.0.0). (CVE-2024-2511)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of OpenSSL installed on the remote host is prior to 1.1.1y. It is, therefore, affected by a vulnerability as referenced in the 1.1.1y advisory.

  - Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when     processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to     trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3     if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured     and the default anti-replay protection is in use). In this case, under certain conditions, the session     cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache     will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario     for this failure to force a Denial of Service. It may also happen by accident in normal operation. This     issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in     3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue. Found     by Manish Patidar (Hewlett Packard Enterprise). Fix developed by Matt Caswell. Fixed in OpenSSL 3.0.14     (Affected since 3.0.0). (CVE-2024-2511)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
197110	Amazon Linux 2 : edk2 (ALAS-2024-2539)	Nessus	Amazon Linux Local Security Checks	medium
197058	SUSE SLES15 Security Update : openssl-1_1 (SUSE-SU-2024:1633-1)	Nessus	SuSE Local Security Checks	medium
197046	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : openssl-3 (SUSE-SU-2024:1634-1)	Nessus	SuSE Local Security Checks	medium
195497	RHEL 6 : openssl (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
193185	FreeBSD : OpenSSL -- Unbounded memory growth with session handling in TLSv1.3 (7c217849-f7d7-11ee-a490-84a93843eb75)	Nessus	FreeBSD Local Security Checks	medium
192974	OpenSSL 3.1.0 < 3.1.6 Vulnerability	Nessus	Web Servers	medium
192967	OpenSSL 3.2.0 < 3.2.2 Vulnerability	Nessus	Web Servers	medium
192966	OpenSSL 3.0.0 < 3.0.14 Vulnerability	Nessus	Web Servers	medium
192965	OpenSSL 1.1.1 < 1.1.1y Vulnerability	Nessus	Web Servers	medium

Detections

Analytics

CVE-2024-2511

medium

Tenable Plugins

medium

medium

medium

critical

medium

medium

medium

medium

medium