CVE-2023-2977

A vulnerbility was found in OpenSC. This security flaw cause a buffer overrun vulnerability in pkcs15 cardos_have_verifyrc_package. The attacker can supply a smart card package with malformed ASN1 context. The cardos_have_verifyrc_package function scans the ASN1 buffer for 2 tags, where remaining length is wrongly caculated due to moved starting pointer. This leads to possible heap-based buffer oob read. In cases where ASAN is enabled while compiling this causes a crash. Further info leak or more damage is possible.

Score
CVSS 3.1 7.1 High
Status
Modified - secalert@redhat.com
Published
2023-06-01
Last modified
2025-11-03
Weaknesses
CWE-119, CWE-125

Affected products

References

 
 
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