Use of Externally-Controlled Format String Affecting libxslt package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.46% (76th 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 Use of Externally-Controlled Format String vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-RHEL7-LIBXSLT-1383612
  • published26 Jul 2021
  • disclosed30 Jun 2019

Introduced: 30 Jun 2019

CVE-2019-13117  (opens in a new tab)
CWE-134  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 libxslt.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxslt package and not the libxslt package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

In numbers.c in libxslt 1.1.33, an xsl:number with certain format strings could lead to a uninitialized read in xsltNumberFormatInsertNumbers. This could allow an attacker to discern whether a byte on the stack contains the characters A, a, I, i, or 0, or any other character.

CVSS Scores

version 3.1