Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2018.2443
botan2 -- ECDSA side channel
21 August 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: botan
Publisher: FreeBSD
Operating System: FreeBSD
Linux variants
Impact/Access: Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-12435
Original Bulletin:
http://www.vuxml.org/freebsd/7762d7ad-2e38-41d2-9785-c51f653ba8bd.html
Comment: This advisory references vulnerabilities in products which run on
platforms other than FreeBSD. It is recommended that administrators
running botan check for an updated version of the software for their
operating system.
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botan2 -- ECDSA side channel
Affected packages
2.5.0 <= botan2 < 2.7.0
Details
VuXML ID 7762d7ad-2e38-41d2-9785-c51f653ba8bd
Discovery 2018-06-13
Entry 2018-08-17
botan2 developers report:
A side channel in the ECDSA signature operation could allow a local
attacker to recover the secret key. Found by Keegan Ryan of NCC Group.
Bug introduced in 2.5.0, fixed in 2.7.0. The 1.10 branch is not affected.
[source]
References
CVE Name CVE-2018-12435
URL https://botan.randombit.net/security.html#id1
URL https://github.com/randombit/botan/pull/1604
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