CVE-2019-13117 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00062.html http://www.openwall.com/lists/oss-security/2019/11/17/2 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14471 https://gitlab.gnome.org/GNOME/libxslt/commit/c5eb6cf3aba0af048596106ed839b4ae17ecbcb1 https://lists.debian.org/debian-lts-announce/2019/07/msg00020.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IOYJKXPQCUNBMMQJWYXOR6QRUJZHEDRZ/ https://oss-fuzz.com/testcase-detail/5631739747106816 https://security.netapp.com/advisory/ntap-20190806-0004/ https://security.netapp.com/advisory/ntap-20200122-0003/ https://usn.ubuntu.com/4164-1/ https://www.oracle.com/security-alerts/cpujan2020.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5