VulnerabilityModified
CVE-2018-14598
A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed later on, leading to DoS (segmentation fault).
HIGH 7.5EPSS 4.23%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed later on, leading to DoS (segmentation fault).
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.23% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- x.org/libx11 · canonical/ubuntu linux · debian/debian linux · fedoraproject/fedora
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2018/08/21/6Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/105177Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041543Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2079
- https://bugzilla.suse.com/show_bug.cgi?id=1102073Issue Tracking, Patch, Third Party Advisory
- https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=e83722768fd5c467ef61fa159e8c6278770b45c2Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/08/msg00030.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGARUV66TS5OOSLR5A76BUB7SDV6GO4F/
- https://lists.x.org/archives/xorg-announce/2018-August/002916.htmlThird Party Advisory
- https://security.gentoo.org/glsa/201811-01Third Party Advisory
- https://usn.ubuntu.com/3758-1/Third Party Advisory
- https://usn.ubuntu.com/3758-2/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2018/08/21/6Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/105177Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041543Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2079
- https://bugzilla.suse.com/show_bug.cgi?id=1102073Issue Tracking, Patch, Third Party Advisory
- https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=e83722768fd5c467ef61fa159e8c6278770b45c2Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/08/msg00030.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGARUV66TS5OOSLR5A76BUB7SDV6GO4F/
- https://lists.x.org/archives/xorg-announce/2018-August/002916.htmlThird Party Advisory
- https://security.gentoo.org/glsa/201811-01Third Party Advisory
- https://usn.ubuntu.com/3758-1/Third Party Advisory
- https://usn.ubuntu.com/3758-2/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.