Home/CVE/The TCOS smart card software driver in OpenSC before 0.21.0-rc1 has a stack-based buffer overflow in tcos_decipher.
CVE

CVE-2020-26572

The TCOS smart card software driver in OpenSC before 0.21.0-rc1 has a stack-based buffer overflow in tcos_decipher.

The TCOS smart card software driver in OpenSC before 0.21.0-rc1 has a stack-based buffer overflow in tcos_decipher.

MEDIUM · CVSS 5.5 EPSS 0.00051
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

3
opensc project opensc<= 0.20.0
fedoraproject fedoraall versions
debian linuxall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Oct 2020 · 02:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

8
suse-csafopenSUSE-SU-2024:11123-1
usnUSN-5281-1
suse-csafSUSE-SU-2022:1041-1
msrcCVE-2020-26572
suse-csafopenSUSE-SU-2021:0565-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2020/11/24/4Mailing ListThird Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=22967Third Party Advisory
https://github.com/OpenSC/OpenSC/commit/9d294de90d1cc66956389856e60b6944b27b4817PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00027.htmlMailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXOHFDMNMO6IDECAGUTB3SJGAGXVRT6S/
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