UBUNTU-CVE-2017-18258

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2017-18258
Downstream
USN-3739-1
Published: 08 Apr 2018, 00:00
Last modified:22 Apr 2026, 11:22

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.0 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Apr 2018, 00:00
Published
Vulnerability first disclosed
22 Apr 2026, 11:22
Last Modified
Vulnerability information updated

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 Metrics

  • v3.0•MEDIUM•Score: 6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected Systems

  • ubuntu•libxml2

    < 2.9.1+dfsg1-3ubuntu4.13 | < 2.9.3+dfsg1-1ubuntu0.6 | < 2.9.4+dfsg1-6.1ubuntu1.2

References (3)