Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xmlsoft | Libxml2 | < 2.9.6 |
Related Weaknesses (CWE)
References
- https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dPatchVendor 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=e2a9122b8dde53d320750451e9907a7dPatchVendor 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/
FAQ
What is CVE-2017-18258?
CVE-2017-18258 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 re...
How severe is CVE-2017-18258?
CVE-2017-18258 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-18258?
Check the references section above for vendor advisories and patch information. Affected products include: Xmlsoft Libxml2.