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Family: Gentoo Local Security Checks --> Category: infos
[GLSA-200603-15] Crypt::CBC: Insecure initialization vector Vulnerability Scan
Vulnerability Scan Summary
Crypt::CBC: Insecure initialization vector
Detailed Explanation for this Vulnerability Test
The remote host is affected by the vulnerability described in GLSA-200603-15
(Crypt::CBC: Insecure initialization vector)
Lincoln Stein discovered that Crypt::CBC fails to handle 16 bytes
long initializiation vectors correctly when running in the RandomIV
mode, resulting in a weaker encryption because the second part of every
block will always be encrypted with zeros if the blocksize of the
cipher is greater than 8 bytes.
Impact
A possible hacker could exploit weak ciphertext produced by Crypt::CBC
to bypass certain security restrictions or to gain access to sensitive
data.
Workaround
There is no known workaround at this time.
References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0898
Solution:
All Crypt::CBC users should upgrade to the latest available
version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-perl/crypt-cbc-2.17"
Threat Level: Low
Click HERE for more information and discussions on this network vulnerability scan.
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