Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: 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. CVE-2021-42782: 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-2021-42781: 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-2021-42780: 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-2021-42779: A heap use after free issue was found in Opensc before version 0.22.0 in sc_file_valid.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | opensc | 0:0.19.0-5.amzn2 |
| Amazon Linux · 2 | opensc-debuginfo | 0:0.19.0-5.amzn2 |
Vulnerabilities 5
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High 7.1
A vulnerbility was found in OpenSC. This security flaw cause a buffer overrun vulnerability in pkcs15 cardos_have_verif…
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Unscored —
A heap use after free issue was found in Opensc before version 0.22.0 in sc_file_valid.
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Unscored —
A use after return issue was found in Opensc before version 0.22.0 in insert_pin function that could potentially crash …
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Unscored —
Heap buffer overflow issues were found in Opensc before version 0.22.0 in pkcs15-oberthur.c that could potentially cras…
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Unscored —
Stack buffer overflow issues were found in Opensc before version 0.22.0 in various places that could potentially crash …
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-42779.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-42780.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-42781.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-42782.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2023-2977.html