PT-2023-31165 · Phpseclib · Phpseclib

Terrafrost · Published 2023-11-27 · Updated 2026-05-09 · CVE-2023-49316

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions phpseclib versions 3.0.0 through 3.0.33

Description The issue arises from excessively large degrees in binary fields, which can lead to a denial of service. This occurs in the Math/BinaryField.php file of the phpseclib library.

Recommendations For phpseclib versions 3.0.0 through 3.0.33, update to version 3.0.34 or later to resolve the issue.

Exploit

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-834

CWE-400

Related Identifiers

CVE-2023-49316

GHSA-2F25-PFQ3-C7H8

GHSA-JPR7-Q523-HX25

Affected Products

Phpseclib

References · 17

• 🔥 https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2023-49316.yaml · Exploit
• https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-49316 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-49316 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-49316 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-49316 · Security Note
• https://osv.dev/vulnerability/GHSA-2f25-pfq3-c7h8 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-49316 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-49316 · Security Note
• https://osv.dev/vulnerability/GHSA-jpr7-q523-hx25 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-49316 · Vendor Advisory
• https://github.com/phpseclib/phpseclib · Note
• https://github.com/phpseclib/phpseclib/releases/tag/3.0.34 · Note
• https://github.com/phpseclib/phpseclib/security/advisories/GHSA-2f25-pfq3-c7h8 · Note
• https://t.me/cvenotify/61560 · Telegram Post