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CVE-2019-1551

CVE-2019-1551 · rsaz_512_sqr overflow bug on x86_64

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

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).

CVSS 5.3 · Medium · EPSS 14.3% · Fix available

Published
Updated

Stack: system · network

Affected products and versions

  • openssl

    Versions
    • Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d): Affected
    • Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t): Affected

    No fix published

  • openssl Debian:12

    Affected ranges
    • ECOSYSTEM: < 1.1.1e-1

    Update to 1.1.1e-1

  • openssl Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.1.1e-1

    Update to 1.1.1e-1

  • openssl Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.1.1e-1

    Update to 1.1.1e-1

  • openssl Ubuntu:16.04:LTS

    Versions
    • 1.0.2d-0ubuntu1
    • 1.0.2d-0ubuntu2
    • 1.0.2e-1ubuntu1
    • 1.0.2f-2ubuntu1
    • 1.0.2g-1ubuntu2
    • 1.0.2g-1ubuntu3
    • 1.0.2g-1ubuntu4
    • 1.0.2g-1ubuntu4.1
    • 1.0.2g-1ubuntu4.2
    • 1.0.2g-1ubuntu4.4
    • 1.0.2g-1ubuntu4.5
    • 1.0.2g-1ubuntu4.6
    • 1.0.2g-1ubuntu4.8
    • 1.0.2g-1ubuntu4.9
    • 1.0.2g-1ubuntu4.10
    • 1.0.2g-1ubuntu4.11
    • 1.0.2g-1ubuntu4.12
    • 1.0.2g-1ubuntu4.13
    • 1.0.2g-1ubuntu4.14
    • 1.0.2g-1ubuntu4.15
    Affected ranges
    • ECOSYSTEM: < 1.0.2g-1ubuntu4.16

    Update to 1.0.2g-1ubuntu4.16

  • openssl Ubuntu:18.04:LTS

    Versions
    • 1.0.2g-1ubuntu13
    • 1.0.2g-1ubuntu14
    • 1.0.2n-1ubuntu1
    • 1.1.0g-2ubuntu1
    • 1.1.0g-2ubuntu2
    • 1.1.0g-2ubuntu3
    • 1.1.0g-2ubuntu4
    • 1.1.0g-2ubuntu4.1
    • 1.1.0g-2ubuntu4.3
    • 1.1.1-1ubuntu2.1~18.04.1
    • 1.1.1-1ubuntu2.1~18.04.2
    • 1.1.1-1ubuntu2.1~18.04.3
    • 1.1.1-1ubuntu2.1~18.04.4
    • 1.1.1-1ubuntu2.1~18.04.5
    Affected ranges
    • ECOSYSTEM: < 1.1.1-1ubuntu2.1~18.04.6

    Update to 1.1.1-1ubuntu2.1~18.04.6

  • openssl1.0 Ubuntu:18.04:LTS

    Versions
    • 1.0.2n-1ubuntu2
    • 1.0.2n-1ubuntu3
    • 1.0.2n-1ubuntu4
    • 1.0.2n-1ubuntu5
    • 1.0.2n-1ubuntu5.1
    • 1.0.2n-1ubuntu5.2
    • 1.0.2n-1ubuntu5.3
    Affected ranges
    • ECOSYSTEM: < 1.0.2n-1ubuntu5.4

    Update to 1.0.2n-1ubuntu5.4

  • openssl Ubuntu:20.04:LTS

    Versions
    • 1.1.1c-1ubuntu4
    • 1.1.1d-2ubuntu3
    • 1.1.1d-2ubuntu6
    Affected ranges
    • ECOSYSTEM: < 1.1.1f-1ubuntu1

    Update to 1.1.1f-1ubuntu1

Original sources

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