Use After Free in Apple Ipados
CVE-2021-36976
libarchive 3.4.1 through 3.5.1 has a use-after-free in copy_string (called from do_uncompress_block and process_block).
Vulnerability class: Use-After-Free
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: 0.028 (86.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Apple Ipados
- Apple Iphone OS
- Apple macOS
- Apple watchOS
- Libarchive
- Splunk Universal Forwarder — versions 9.1.0
- Fedoraproject Fedora — versions 35
Weakness classification (CWE)
References
- github.com/google/oss-fuzz-vulns/blob/main/vulns/libarchive/OSV-2021-557.yaml (Third Party Advisory)
- bugs.chromium.org/p/oss-fuzz/issues/detail (Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- support.apple.com/kb/HT213183 (Third Party Advisory)
- support.apple.com/kb/HT213182 (Third Party Advisory)
- support.apple.com/kb/HT213193 (Third Party Advisory)
- seclists.org/fulldisclosure/2022/Mar/28 (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2022/Mar/29 (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2022/Mar/27 (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202208-26 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-36976?
- CVE-2021-36976 is a medium-severity vulnerability in Apple Ipados, classified under Use After Free. CVSS score: 6.5/10. Published 2021-07-20.
- How severe is CVE-2021-36976?
- Medium severity. CVSS v3 base score is 6.5 out of 10.