CVE-2019-18197 Information

Description

In xsltCopyText in transform.c in libxslt 1.1.33 a pointer variable isn’t reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way a bounds check could fail and memory outside a buffer could be written to or uninitialized data could be disclosed.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00010.html http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00015.html http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00025.html http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00062.html http://www.openwall.com/lists/oss-security/2019/11/17/2 https://access.redhat.com/errata/RHSA-2020:0514 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914 https://gitlab.gnome.org/GNOME/libxslt/commit/2232473733b7313d67de8836ea3b29eec6e8e285 https://lists.debian.org/debian-lts-announce/2019/10/msg00037.html https://security.netapp.com/advisory/ntap-20191031-0004/ https://security.netapp.com/advisory/ntap-20200416-0004/ https://usn.ubuntu.com/4164-1/ https://www.oracle.com/security-alerts/cpuapr2020.html

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.5