Buffer overflow in Libarchive
CVE-2020-9308
archive_read_support_format_rar5.c in libarchive before 3.4.2 attempts to unpack a RAR5 file with an invalid or corrupted header (such as a header size of zero), leading to a SIGSEGV or possibly unspecified other impact.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.023 (82.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Libarchive
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.10
- Fedoraproject Fedora — versions 31, 32
Weakness classification (CWE)
References
- github.com/libarchive/libarchive/pull/1326 (Patch, Third Party Advisory)
- bugs.chromium.org/p/oss-fuzz/issues/detail (Patch, Third Party Advisory, Issue Tracking)
- github.com/libarchive/libarchive/pull/1326/commits/94821008d6eea81e315c5881cdf7… (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202003-28 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4293-1/ (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2020-9308?
- CVE-2020-9308 is a high-severity vulnerability in Libarchive, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-02-20.
- How severe is CVE-2020-9308?
- High severity. CVSS v3 base score is 8.8 out of 10.