libxslt: CVE-2019-13117

Related Vulnerabilities: CVE-2019-13117  

Debian Bug report logs - #931321
libxslt: CVE-2019-13117

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Reported by: Salvatore Bonaccorso <carnil@debian.org>

Date: Mon, 1 Jul 2019 19:30:16 UTC

Severity: important

Tags: security, upstream

Found in version libxslt/1.1.32-2

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Report forwarded to debian-bugs-dist@lists.debian.org, carnil@debian.org, team@security.debian.org, team@security.debian.org, Debian XML/SGML Group <debian-xml-sgml-pkgs@lists.alioth.debian.org>:
Bug#931321; Package src:libxslt. (Mon, 01 Jul 2019 19:30:19 GMT) (full text, mbox, link).


Acknowledgement sent to Salvatore Bonaccorso <carnil@debian.org>:
New Bug report received and forwarded. Copy sent to carnil@debian.org, team@security.debian.org, team@security.debian.org, Debian XML/SGML Group <debian-xml-sgml-pkgs@lists.alioth.debian.org>. (Mon, 01 Jul 2019 19:30:20 GMT) (full text, mbox, link).


Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: libxslt: CVE-2019-13117
Date: Mon, 01 Jul 2019 21:27:23 +0200
Source: libxslt
Version: 1.1.32-2
Severity: important
Tags: security upstream

Hi,

The following vulnerability was published for libxslt.

CVE-2019-13117[0]:
| 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.

The oss-fuzz report and testcases are not public at this moment, but
still filling the bug according to source code view and patch to be
applied. I have no futher details unfortunately.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2019-13117
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13117
[1] https://gitlab.gnome.org/GNOME/libxslt/commit/c5eb6cf3aba0af048596106ed839b4ae17ecbcb1

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore



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