CVE-2023-52892

In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.

In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.

TuxCare rebuilt phpseclib/phpseclib to address 4 CVEs. Fixed in 0.3.10-p1+tuxcare.

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)

It was discovered that phpseclib did not perform padding validation in constant time when using AES in CBC mode. A remote attacker could possibly use this issue to conduct a padding oracle timing attack and obtain sensitive information.