Resource exhaustion in Xmlsoft Libxml2
CVE-2017-18258
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: -0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.debian.org/debian-lts-announce/2018/09/msg00035.html (mailing-list)
- usn.ubuntu.com/3739-1/ (vendor-advisory)
- git.gnome.org/browse/libxml2/commit/ (Patch, Vendor Advisory)
- kc.mcafee.com/corporate/index
- security.netapp.com/advisory/ntap-20190719-0001/
- lists.debian.org/debian-lts-announce/2020/09/msg00009.html (mailing-list)
Frequently asked questions
- What is CVE-2017-18258?
- CVE-2017-18258 is a medium-severity vulnerability in Xmlsoft Libxml2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2018-04-08.
- How severe is CVE-2017-18258?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2017-18258 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.