CVE-2019-18197
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 4.36% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416, CWE-908
- Affected
- xmlsoft/libxslt · canonical/ubuntu linux · debian/debian linux
- Source
- cve@mitre.org
References
- 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/2019/11/17/2Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0514
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746Issue Tracking, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768Issue Tracking, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914Issue Tracking, Third Party Advisory
- https://gitlab.gnome.org/GNOME/libxslt/commit/2232473733b7313d67de8836ea3b29eec6e8e285Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00037.htmlThird Party Advisory
- https://security.netapp.com/advisory/ntap-20191031-0004/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200416-0004/
- https://usn.ubuntu.com/4164-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2020.html
- 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/2019/11/17/2Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0514
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746Issue Tracking, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768Issue Tracking, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914Issue Tracking, Third Party Advisory
- https://gitlab.gnome.org/GNOME/libxslt/commit/2232473733b7313d67de8836ea3b29eec6e8e285Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00037.htmlThird Party Advisory
- https://security.netapp.com/advisory/ntap-20191031-0004/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200416-0004/
- https://usn.ubuntu.com/4164-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2020.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.