phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7404-1 advisory.

    It was discovered that phpseclib did not correctly handle RSA PKCS#1 v1.5 signature verification. An     attacker could possibly use this issue to bypass authentication. This issue only affected Ubuntu 20.04     LTS. (CVE-2021-30130)

    It was discovered that phpseclib did not correctly handle certain characters in certain TLS fields, which     could lead to name confusion. An attacker could possibly use this issue to bypass authentication.
    (CVE-2023-52892)

    It was discovered that phpseclib incorrectly limited the size of prime numbers generated by isPrime. An     attacker could possibly use this issue to cause a denial of service. (CVE-2024-27354)

    It was discovered that phpseclib did not correctly handle processing the ASN.1 object identifier of a     certificate. An attacker could possibly use this issue to cause a denial of service. This issue only     affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2024-27355)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.
    (CVE-2021-30130)

The remote Debian 10 host has a package installed that is affected by a vulnerability as referenced in the dla-3198 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3198-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Sylvain Beucler     November 17, 2022                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : php-phpseclib     Version        : 2.0.30-2~deb10u1     CVE ID         : CVE-2021-30130

    It was discovered that php-phpseclib, a pure-PHP implementation of     various cryptographic and arithmetic algorithms (v2), mishandles RSA     PKCS#1 v1.5 signature verification. An attacker may get invalid     signatures accepted, bypassing authorization control in specific     situations.

    For Debian 10 buster, this problem has been fixed in version     2.0.30-2~deb10u1.

    We recommend that you upgrade your php-phpseclib packages.

    For the detailed security status of php-phpseclib please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/php-phpseclib

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

The remote Debian 10 host has a package installed that is affected by a vulnerability as referenced in the dla-3197 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3197-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Sylvain Beucler     November 17, 2022                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : phpseclib     Version        : 1.0.19-3~deb10u1     CVE ID         : CVE-2021-30130

    It was discovered that phpseclib, a pure-PHP implementation of various     cryptographic and arithmetic algorithms (v1), mishandles RSA PKCS#1     v1.5 signature verification. An attacker may get invalid signatures     accepted, bypassing authorization control in specific situations.

    For Debian 10 buster, this problem has been fixed in version     1.0.19-3~deb10u1.

    We recommend that you upgrade your phpseclib packages.

    For the detailed security status of phpseclib please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/phpseclib

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

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
233753	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : phpseclib vulnerabilities (USN-7404-1)	Nessus	Ubuntu Local Security Checks	high
419278	SCA: security update for phpseclib/phpseclib (GHSA-vf4w-fg7r-5v94)	Tenable Cloud Security	SCA Checks	high
419278	SCA: security update for phpseclib/phpseclib (GHSA-vf4w-fg7r-5v94)	Tenable Self-Hosted Container Security	SCA Checks	high
167912	Debian dla-3198 : php-phpseclib - security update	Nessus	Debian Local Security Checks	high
167910	Debian dla-3197 : php-seclib - security update	Nessus	Debian Local Security Checks	high

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CVE-2021-30130

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