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Debian 10 Buster DLA-3749-1 Critical: phpseclib Denial of Service Threat

debian lts
Calendar Grey March 5, 2024
Dist Debian Esm H88
Debian LTS Advisory DLA-3750-1 tackles a security flaw in python-requests that necessitates prompt attention and update.
Security issues were discovered in phpseclib, a PHP library for arbitrary-precision integer arithmetic, which could lead to Denial of Service
Topics%20covered

Topics Covered

security advisory denial of service critical debian phpseclib

Summary

CVE-2024-27354

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).

This issue was introduced when attempting to fix CVE-2023-27560.

CVE-2024-27355

When processing the ASN.1 object identifier of a certificate, a sub
identifier may be provided that leads to a denial of service (CPU
consumption for `decodeOID`).

For Debian 10 buster, these problems have been fixed in version
1.0.19-3~deb10u3.

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/source-package/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


Severity
critical
Lowest
Low
Medium
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Critical

Package: phpseclib
Version: 1.0.19-3~deb10u3
CVE ID: CVE-2024-27354 CVE-2024-27355

Topics%20covered

Topics Covered

security advisory denial of service critical debian phpseclib

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