[xml/sgml-pkgs] Bug#931321: libxslt: CVE-2019-13117

[Salvatore Bonaccorso]

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