QID 355552

Date Published: 2023-07-03

QID 355552: Amazon Linux Security Advisory for opensc : ALAS2-2023-2102

A heap use after free issue was found in opensc before version 0.22.0 in sc_file_valid. (
( CVE-2021-42779) a use after return issue was found in opensc before version 0.22.0 in insert_pin function that could potentially crash programs using the library. (
( CVE-2021-42780) heap buffer overflow issues were found in opensc before version 0.22.0 in pkcs15-oberthur.c that could potentially crash programs using the library. (
( CVE-2021-42781) stack buffer overflow issues were found in opensc before version 0.22.0 in various places that could potentially crash programs using the library. (
( CVE-2021-42782) 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. (
( CVE-2023-2977)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.1 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2023-2102 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 355552

    CVE-2021-42782 | CVE-2023-2977 | CVE-2021-42779 | CVE-2021-42781 | CVE-2021-42780 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2023-2102 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2023-2102.html
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].