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Bug 483200 (CVE-2012-6051) - dev-libs/cityhash: Denial of Service (CVE-2012-6051)
Summary: dev-libs/cityhash: Denial of Service (CVE-2012-6051)
Status: RESOLVED CANTFIX
Alias: CVE-2012-6051
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal trivial (vote)
Assignee: Gentoo Security
URL:
Whiteboard: ~3 [noglsa]
Keywords:
Depends on:
Blocks:
 
Reported: 2013-08-31 21:59 UTC by GLSAMaker/CVETool Bot
Modified: 2014-06-19 12:31 UTC (History)
1 user (show)

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Runtime testing required: ---

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Description GLSAMaker/CVETool Bot gentoo-dev 2013-08-31 21:59:11 UTC 
CVE-2012-6051 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6051):
  Google CityHash computes hash values without properly restricting the
  ability to trigger hash collisions predictably, which allows
  context-dependent attackers to cause a denial of service (CPU consumption)
  via crafted input to an application that maintains a hash table, as
  demonstrated by a universal multicollision attack.


The bug isn't explicitly mentioned in the cityhash ChangeLog, but I suspect that 1.0.3 is affected and needs to be cleaned.
Comment 1 Yury German Gentoo Infrastructure gentoo-dev 2013-12-30 05:52:03 UTC 
https://code.google.com/p/cityhash/issues/detail?id=10

As per upstream this will not be fixed.
Comment 2 Chris Reffett (RETIRED) gentoo-dev Security 2014-06-19 12:31:56 UTC 
If upstream won't fix, there isn't much we can do about this, and I wouldn't call this a significant enough issue to warrant complete removal. Closing noglsa.