CVE-2017-18258
libxml2: The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory...
CVE-2017-18258 is fixed in 4 products on 1 platform, first by libxml2 2.9.4+dfsg1-6.1ubuntu1.2, released July 30, 2018. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0273
86th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libxml2 · Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.2 | libxml2 2.9.4+dfsg1-6.1ubuntu1.2 | Jul 30, 2018 |
| libxml2-utils · Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.2 | libxml2-utils 2.9.4+dfsg1-6.1ubuntu1.2 | Jul 30, 2018 |
| python-libxml2 · Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.2 | python-libxml2 2.9.4+dfsg1-6.1ubuntu1.2 | Jul 30, 2018 |
| python3-libxml2 · Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.2 | python3-libxml2 2.9.4+dfsg1-6.1ubuntu1.2 | Jul 30, 2018 |