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Buffer Overflow Affecting nss-sysinit package, versions <0:3.53.1-7.87.amzn1

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.54% (77th percentile)
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NVD
9.8 critical
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SUSE
8.8 high
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Red Hat
9.8 critical

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  • Snyk ID SNYK-AMZN201803-NSSSYSINIT-2306647
  • published 2 Dec 2021
  • disclosed 8 Dec 2021
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Introduced: 2 Dec 2021

CVE-2021-43527 Open this link in a new tab
CWE-120 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2018.03 nss-sysinit to version 0:3.53.1-7.87.amzn1 or higher.
This issue was patched in ALAS-2021-1552.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nss-sysinit package and not the nss-sysinit package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures encoded within CMS, S/MIME, PKCS #7, or PKCS #12 are likely to be impacted. Applications using NSS for certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how they configure NSS. Note: This vulnerability does NOT impact Mozilla Firefox. However, email clients and PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.