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Database

Asymmetric denial of service - ReDoS In phpseclib/phpseclib

Description

Duplicate Advisory: phpseclib: guardrails needed on isPrime and randomPrime

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-2528-jw5q-ww88. This link is maintained to preserve external references.

Original Description

An issue was discovered in phpseclib 1.x before 1.0.23, 2.x before 2.0.47, and 3.x before 3.0.36. An attacker can construct a malformed certificate containing an extremely large prime to cause a denial of service (CPU consumption for an isPrime primality check). NOTE: this issue was introduced when attempting to fix CVE-2023-27560.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem
Package
Affected version
Patched versions

Aliases

1. NVD-2024-273542. GHSA-hg35-mp25-qf6h3. GCVE-GHSA-hg35-mp25-qf6h4. lists.debian.org5. lists.debian.org

References

1. https://github.com/phpseclib/phpseclib/commit/2870c8fab3f132d2ed40a66c97a36fe5ab6256982. https://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca85753. https://github.com/phpseclib/phpseclib/commit/c55b75199ec8d12cec6eadf6da99da4a3712fe564. https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b5. https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2024-27354.yaml6. https://github.com/phpseclib/phpseclib/blob/master/phpseclib/Math/PrimeField.php#L49

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