Operating System:

[Debian]

Published:

19 December 2019

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.4715
                       python-ecdsa security update
                             19 December 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           python-ecdsa
Publisher:         Debian
Operating System:  Debian GNU/Linux 10
                   Debian GNU/Linux 9
Impact/Access:     Denial of Service              -- Remote with User Interaction
                   Provide Misleading Information -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-14859 CVE-2019-14853 

Reference:         ESB-2019.4692
                   ESB-2019.4372
                   ESB-2019.4035

Original Bulletin: 
   http://www.debian.org/security/2019/dsa-4588

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Debian Security Advisory DSA-4588-1                   security@debian.org
https://www.debian.org/security/                       Sebastien Delafond
December 17, 2019                     https://www.debian.org/security/faq
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Package        : python-ecdsa
CVE ID         : CVE-2019-14853 CVE-2019-14859

It was discovered that python-ecdsa, a cryptographic signature library
for Python, incorrectly handled certain signatures. A remote attacker
could use this issue to cause python-ecdsa to either not warn about
incorrect signatures, or generate exceptions resulting in a
denial-of-service.

For the oldstable distribution (stretch), these problems have been fixed
in version 0.13-2+deb9u1.

For the stable distribution (buster), these problems have been fixed in
version 0.13-3+deb10u1.

We recommend that you upgrade your python-ecdsa packages.

For the detailed security status of python-ecdsa please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/python-ecdsa

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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