CVE-2019-13117

Publication date 1 July 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libxslt	19.10 eoan	Not affected
	19.04 disco	Fixed 1.1.32-2ubuntu0.2
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Fixed 1.1.29-5ubuntu0.2
	16.04 LTS xenial	Fixed 1.1.28-2.1ubuntu0.3
	14.04 LTS trusty	Fixed 1.1.28-2ubuntu0.2+esm1

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libxslt	Upstream: c5eb6cf

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-4164-1
Libxslt vulnerabilities
22 October 2019