Buffer overflow in Opensc Project
CVE-2020-26570
The Oberthur smart card software driver in OpenSC before 0.21.0-rc1 has a heap-based buffer overflow in sc_oberthur_read_file.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Opensc Project
- Debian Linux — versions 9.0
- Fedoraproject Fedora — versions 33
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.chromium.org/p/oss-fuzz/issues/detail (Third Party Advisory)
- github.com/OpenSC/OpenSC/commit/6903aebfddc466d966c7b865fae34572bf3ed23e (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/11/24/4 (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2021/11/msg00027.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26570?
- CVE-2020-26570 is a medium-severity vulnerability in Opensc Project, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2020-10-06.
- How severe is CVE-2020-26570?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2020-26570 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.