Improper Input Validation Affecting glibc package, versions <2.17-94


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
1.58% (88th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Improper Input Validation vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-DEBIAN9-GLIBC-356635
  • published4 Oct 2013
  • disclosed4 Oct 2013

Introduced: 4 Oct 2013

CVE-2013-4788  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Debian:9 glibc to version 2.17-94 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.

CVSS Scores

version 3.1