CVE-2023-2977
High
Description
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.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Opensc
PublishedJun 1, 2023
First seenJun 1, 2023
Weakness typeCWE-119Memory buffer bounds error
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| opensc_project opensc | 0.23.0 | — |
| redhat enterprise_linux | 8.0, 9.0 | — |
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