VulnerabilityModified
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…
MEDIUM 6.5EPSS 2.71%
Does this matter?
Lower severity and a low EPSS score (2.71%). Track it; it rarely justifies an emergency change on its own.
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 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 2.71% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- xmlsoft/libxml2
- Source
- cve@mitre.org
References
- https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bbPatch, Vendor Advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10284
- https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
- https://security.netapp.com/advisory/ntap-20190719-0001/
- https://usn.ubuntu.com/3739-1/
- https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bbPatch, Vendor Advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10284
- https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
- https://security.netapp.com/advisory/ntap-20190719-0001/
- https://usn.ubuntu.com/3739-1/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.