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CVE-2021-43527

CVE-2021-43527

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.8 · Critical · EPSS 17.6% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • nss

    Versions
    • ≥ unspecified, < 3.73: Affected (custom)
    • ≥ unspecified, < 3.68.1: Affected (custom)

    Update to 3.68.1

  • nss Debian:12

    Affected ranges
    • ECOSYSTEM: < 2:3.73-1

    Update to 2:3.73-1

  • nss Debian:13

    Affected ranges
    • ECOSYSTEM: < 2:3.73-1

    Update to 2:3.73-1

  • nss Debian:14

    Affected ranges
    • ECOSYSTEM: < 2:3.73-1

    Update to 2:3.73-1

  • nss Ubuntu:Pro:14.04:LTS

    Versions
    • 2:3.15.1-1ubuntu1
    • 2:3.15.2-1
    • 2:3.15.3-1
    • 2:3.15.3.1-1
    • 2:3.15.3.1-1.1
    • 2:3.15.3.1-1.1ubuntu1
    • 2:3.15.4-1ubuntu3
    • 2:3.15.4-1ubuntu4
    • 2:3.15.4-1ubuntu5
    • 2:3.15.4-1ubuntu6
    • 2:3.15.4-1ubuntu7
    • 2:3.15.4-1ubuntu7.1
    • 2:3.17-0ubuntu0.14.04.1
    • 2:3.17.1-0ubuntu0.14.04.1
    • 2:3.17.1-0ubuntu0.14.04.2
    • 2:3.17.4-0ubuntu0.14.04.1
    • 2:3.19.2-0ubuntu0.14.04.1
    • 2:3.19.2.1-0ubuntu0.14.04.1
    • 2:3.19.2.1-0ubuntu0.14.04.2
    • 2:3.21-0ubuntu0.14.04.1
    • 2:3.21-0ubuntu0.14.04.2
    • 2:3.23-0ubuntu0.14.04.1
    • 2:3.26.2-0ubuntu0.14.04.3
    • 2:3.28.4-0ubuntu0.14.04.1
    • 2:3.28.4-0ubuntu0.14.04.2
    • 2:3.28.4-0ubuntu0.14.04.3
    • 2:3.28.4-0ubuntu0.14.04.4
    • 2:3.28.4-0ubuntu0.14.04.5
    • 2:3.28.4-0ubuntu0.14.04.5+esm1
    • 2:3.28.4-0ubuntu0.14.04.5+esm2
    • 2:3.28.4-0ubuntu0.14.04.5+esm3
    • 2:3.28.4-0ubuntu0.14.04.5+esm4
    • 2:3.28.4-0ubuntu0.14.04.5+esm5
    • 2:3.28.4-0ubuntu0.14.04.5+esm6
    • 2:3.28.4-0ubuntu0.14.04.5+esm7
    • 2:3.28.4-0ubuntu0.14.04.5+esm8
    • 2:3.28.4-0ubuntu0.14.04.5+esm9
    Affected ranges
    • ECOSYSTEM: < 2:3.28.4-0ubuntu0.14.04.5+esm10

    Update to 2:3.28.4-0ubuntu0.14.04.5+esm10

  • nss Ubuntu:Pro:16.04:LTS

    Versions
    • 2:3.19.2-1ubuntu1
    • 2:3.19.2.1-0ubuntu1
    • 2:3.21-1ubuntu2
    • 2:3.21-1ubuntu3
    • 2:3.21-1ubuntu4
    • 2:3.23-0ubuntu0.16.04.1
    • 2:3.26.2-0ubuntu0.16.04.2
    • 2:3.28.4-0ubuntu0.16.04.1
    • 2:3.28.4-0ubuntu0.16.04.2
    • 2:3.28.4-0ubuntu0.16.04.3
    • 2:3.28.4-0ubuntu0.16.04.4
    • 2:3.28.4-0ubuntu0.16.04.5
    • 2:3.28.4-0ubuntu0.16.04.6
    • 2:3.28.4-0ubuntu0.16.04.8
    • 2:3.28.4-0ubuntu0.16.04.9
    • 2:3.28.4-0ubuntu0.16.04.10
    • 2:3.28.4-0ubuntu0.16.04.11
    • 2:3.28.4-0ubuntu0.16.04.12
    • 2:3.28.4-0ubuntu0.16.04.13
    • 2:3.28.4-0ubuntu0.16.04.14
    • 2:3.28.4-0ubuntu0.16.04.14+esm1
    Affected ranges
    • ECOSYSTEM: < 2:3.28.4-0ubuntu0.16.04.14+esm2

    Update to 2:3.28.4-0ubuntu0.16.04.14+esm2

  • nss Ubuntu:18.04:LTS

    Versions
    • 2:3.32-1ubuntu3
    • 2:3.34-1ubuntu1
    • 2:3.35-2ubuntu2
    • 2:3.35-2ubuntu2.1
    • 2:3.35-2ubuntu2.2
    • 2:3.35-2ubuntu2.3
    • 2:3.35-2ubuntu2.5
    • 2:3.35-2ubuntu2.6
    • 2:3.35-2ubuntu2.7
    • 2:3.35-2ubuntu2.8
    • 2:3.35-2ubuntu2.9
    • 2:3.35-2ubuntu2.11
    • 2:3.35-2ubuntu2.12
    Affected ranges
    • ECOSYSTEM: < 2:3.35-2ubuntu2.13

    Update to 2:3.35-2ubuntu2.13

  • thunderbird Ubuntu:18.04:LTS

    Versions
    • 1:52.4.0+build1-0ubuntu2
    • 1:52.6.0+build1-0ubuntu1
    • 1:52.7.0+build1-0ubuntu1
    • 1:52.8.0+build1-0ubuntu0.18.04.1
    • 1:52.9.1+build3-0ubuntu0.18.04.1
    • 1:60.2.1+build1-0ubuntu0.18.04.2
    • 1:60.4.0+build2-0ubuntu0.18.04.1
    • 1:60.5.1+build2-0ubuntu0.18.04.1
    • 1:60.6.1+build2-0ubuntu0.18.04.1
    • 1:60.7.0+build1-0ubuntu0.18.04.1
    • 1:60.7.1+build1-0ubuntu0.18.04.1
    • 1:60.7.2+build2-0ubuntu0.18.04.1
    • 1:60.8.0+build1-0ubuntu0.18.04.1
    • 1:60.9.0+build1-0ubuntu0.18.04.1
    • 1:68.2.1+build1-0ubuntu0.18.04.1
    • 1:68.2.2+build1-0ubuntu0.18.04.1
    • 1:68.4.1+build1-0ubuntu0.18.04.1
    • 1:68.7.0+build1-0ubuntu0.18.04.1
    • 1:68.8.0+build2-0ubuntu0.18.04.2
    • 1:68.10.0+build1-0ubuntu0.18.04.1
    • 1:78.8.1+build1-0ubuntu0.18.04.1
    • 1:78.11.0+build1-0ubuntu0.18.04.2
    • 1:78.13.0+build1-0ubuntu0.18.04.1
    • 1:78.14.0+build1-0ubuntu0.18.04.1
    Affected ranges
    • ECOSYSTEM: < 1:78.14.0+build1-0ubuntu0.18.04.2

    Update to 1:78.14.0+build1-0ubuntu0.18.04.2

  • nss Ubuntu:20.04:LTS

    Versions
    • 2:3.45-1ubuntu2
    • 2:3.47-1ubuntu1
    • 2:3.47-1ubuntu2
    • 2:3.48-1ubuntu1
    • 2:3.49.1-1ubuntu1
    • 2:3.49.1-1ubuntu1.1
    • 2:3.49.1-1ubuntu1.2
    • 2:3.49.1-1ubuntu1.4
    • 2:3.49.1-1ubuntu1.5
    Affected ranges
    • ECOSYSTEM: < 2:3.49.1-1ubuntu1.6

    Update to 2:3.49.1-1ubuntu1.6

  • thunderbird Ubuntu:20.04:LTS

    Versions
    • 1:68.1.2+build1-0ubuntu1
    • 1:68.1.2+build1-0ubuntu2
    • 1:68.2.1+build1-0ubuntu1
    • 1:68.2.2+build1-0ubuntu1
    • 1:68.3.0+build2-0ubuntu1
    • 1:68.3.1+build1-0ubuntu2
    • 1:68.4.1+build1-0ubuntu1
    • 1:68.4.2+build2-0ubuntu1
    • 1:68.5.0+build1-0ubuntu1
    • 1:68.6.0+build2-0ubuntu1
    • 1:68.7.0+build1-0ubuntu1
    • 1:68.7.0+build1-0ubuntu2
    • 1:68.8.0+build2-0ubuntu0.20.04.2
    • 1:68.10.0+build1-0ubuntu0.20.04.1
    • 1:78.7.1+build1-0ubuntu0.20.04.1
    • 1:78.8.1+build1-0ubuntu0.20.04.1
    • 1:78.11.0+build1-0ubuntu0.20.04.2
    • 1:78.13.0+build1-0ubuntu0.20.04.2
    • 1:78.14.0+build1-0ubuntu0.20.04.1
    Affected ranges
    • ECOSYSTEM: < 1:78.14.0+build1-0ubuntu0.20.04.2

    Update to 1:78.14.0+build1-0ubuntu0.20.04.2

  • nss Ubuntu:22.04:LTS

    Versions
    • 2:3.68-1ubuntu1
    Affected ranges
    • ECOSYSTEM: < 2:3.68-1ubuntu2

    Update to 2:3.68-1ubuntu2

  • thunderbird Ubuntu:22.04:LTS

    Versions
    • 1:91.1.2+build1-0ubuntu1
    • 1:91.3.0+build2-0ubuntu1
    • 1:91.3.1+build1-0ubuntu1
    • 1:91.3.2+build1-0ubuntu1
    Affected ranges
    • ECOSYSTEM: < 1:91.4.0+build1.1-0ubuntu1

    Update to 1:91.4.0+build1.1-0ubuntu1

Original sources

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