Buffer overflow in Cabextract Project
CVE-2018-18584
In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte too small for the maximal Quantum block, leading to an out-of-bounds write.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.027 · change: -0.004
Affected products
- Cabextract Project
- Libmspack Project — versions 0.3, 0.4, 0.5
- Starwindsoftware Starwind Virtual San
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0
- Red Hat Enterprise Linux — versions 7.0
- SUSE Linux Enterprise Server — versions 11, 12
Weakness classification (CWE)
References
- bugs.debian.org/911640 (Mailing List, Third Party Advisory)
- www.cabextract.org.uk/ (Product, Vendor Advisory)
- usn.ubuntu.com/3814-3/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3814-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3814-2/ (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2018/10/22/1 (Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/10/msg00017.html (mailing-list, Mailing List, Third Party Advisory)
- github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2 (Patch, Third Party Advisory)
- security.gentoo.org/glsa/201903-20 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:2049 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-18584?
- CVE-2018-18584 is a medium-severity vulnerability in Cabextract Project, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2018-10-23.
- How severe is CVE-2018-18584?
- Medium severity. CVSS v3 base score is 6.5 out of 10.