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


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
6.46% (93rd percentile)

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  • Snyk IDSNYK-RHEL7-LIBXSLTPYTHON-5053697
  • 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-python.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxslt-python package and not the libxslt-python 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 Base Scores

version 3.1