CVE-2017-18258

CWE-770 — Allocation without LimitsCWE-400 — Uncontrolled Resource Consumption12 documents8 sources
Severity
6.5MEDIUM
EPSS
0.8%
top 26.13%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Xmlsoft Libxml2
Timeline
PublishedApr 8
Latest updateAug 14

Description

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages3 packages

▶NVDxmlsoft/libxml2< 2.9.6
▶Debianlibxml2< 2.9.10+dfsg-2+3
▶RubyGemsnokogiri< 1.8.2

Patches

Patch: git.gnome.org ↗Patch: git.gnome.org ↗

🔴Vulnerability Details

5
OSV
libxml2 vulnerabilities↗2018-08-14
▶
GHSA
Uncontrolled resource consumption in nokogiri↗2018-04-13
▶
OSV
Uncontrolled resource consumption in nokogiri↗2018-04-13
▶
CVEList
CVE-2017-18258: The xz_head function in xzlib↗2018-04-08
▶
OSV
CVE-2017-18258: The xz_head function in xzlib↗2018-04-08
▶

📋Vendor Advisories

3
Ubuntu
libxml2 vulnerabilities↗2018-08-14
▶
Red Hat
libxml2: Unrestricted memory usage in xz_head() function in xzlib.c↗2017-09-07
▶
Debian
CVE-2017-18258: libxml2 - The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers ...↗2017
▶

💬Community

3
Bugzilla
CVE-2017-18258 mingw-libxml2: libxml2: denial of service in xz_head function in xzlib.c [fedora-all]↗2018-04-12
▶
Bugzilla
CVE-2017-18258 libxml2: Unrestricted memory usage in xz_head() function in xzlib.c↗2018-04-12
▶
Bugzilla
CVE-2017-18258 mingw-libxml2: libxml2: denial of service in xz_head function in xzlib.c [epel-7]↗2018-04-12
▶
CVE-2017-18258 (MEDIUM CVSS 6.5) | The xz_head function in xzlib.c in | cvebase.io