PT-2019-19426 · Gnu+2 · Glibc+5

Dhiraj · Published 2019-02-26 · Updated 2026-05-04 · CVE-2019-9192

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 GNU C Library (aka glibc or libc6) versions prior to 2.30

Description The issue is related to Uncontrolled Recursion in the check dst limits calc pos 1 function in posix/regexec.c. This can be demonstrated by using a crafted pattern '(|)(11)*' in grep. The software maintainer disputes that this is a vulnerability, stating that the behavior occurs only with a crafted pattern.

Recommendations For GNU C Library (aka glibc or libc6) versions prior to 2.30, consider updating to a newer version to mitigate the risk of Uncontrolled Recursion. As a temporary workaround, consider restricting the use of crafted patterns in grep until a patch is available.

Exploit

Fix

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

ALT-PU-2019-3114

CVE-2019-9192

ECHO-FB54-B1C2-328F

Affected Products

Alt Linux

Debian

Gnu C Library

Glibc

Grep

Libc6

References · 10

• 🔥 https://sourceware.org/bugzilla/show_bug.cgi?id=24269 · Exploit
• https://security-tracker.debian.org/tracker/CVE-2019-9192 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2019-9192 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-9192 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2019-9192 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-9192 · Security Note
• https://osv.dev/vulnerability/CVE-2019-9192 · Vendor Advisory
• https://twitter.com/gcpweekly/status/1852765332483477859 · Twitter Post
• https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS · Note
• https://t.me/cvenotify/89065 · Telegram Post