terrafrost

5 exploits Active since Mar 2023
CVE-2026-40194 WRITEUP LOW WRITEUP
phpseclib has a variable-time HMAC comparison in SSH2::get_binary_packet() using != instead of hash_equals()
phpseclib is a PHP secure communications library. Prior to 3.0.51, 2.0.53, and 1.0.28, phpseclib\Net\SSH2::get_binary_packet() uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp(), which short-circuits on the first differing byte. This is a real variable-time comparison (CWE-208), proven by scaling benchmarks. This vulnerability is fixed in 3.0.51, 2.0.53, and 1.0.28.
CVSS 3.7
CVE-2026-32935 WRITEUP HIGH WRITEUP
phpseclib's AES-CBC unpadding susceptible to padding oracle timing attack
phpseclib is a PHP secure communications library. Projects using versions 1.0.26 and below, 2.0.0 through 2.0.51, and 3.0.0 through 3.0.49 are vulnerable to a to padding oracle timing attack when using AES in CBC mode. This issue has been fixed in versions 1.0.27, 2.0.52 and 3.0.50.
CVE-2023-27560 WRITEUP HIGH WRITEUP
Phpseclib < 3.0.19 - Infinite Loop
Math/PrimeField.php in phpseclib 3.x before 3.0.19 has an infinite loop with composite primefields.
CVSS 7.5
CVE-2023-49316 WRITEUP HIGH WRITEUP
phpseclib <3.0.34 - DoS
In Math/BinaryField.php in phpseclib 3 before 3.0.34, excessively large degrees can lead to a denial of service.
CVSS 7.5
CVE-2023-52892 WRITEUP HIGH WRITEUP
Phpseclib < 1.0.22 - Interpretation Conflict
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.
CVSS 7.5