Secunia Security Advisory - Ubuntu has issued an update for lynx-cur. This fixes a security issue and a vulnerability, which can be exploited by malicious people to conduct spoofing attacks and compromise a user's system.
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TITLE:
Ubuntu update for lynx-cur
SECUNIA ADVISORY ID:
SA51442
VERIFY ADVISORY:
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RELEASE DATE:
2012-11-30
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http://secunia.com/advisories/51442/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=51442
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DESCRIPTION:
Ubuntu has issued an update for lynx-cur. This fixes a security issue
and a vulnerability, which can be exploited by malicious people to
conduct spoofing attacks and compromise a user's system.
1) A boundary error within the "convert_to_idna()" function
(WWW/Library/Implementation/HTParse.c) when parsing hostnames can be
exploited to cause a heap-based buffer overflow.
Successful exploitation of this vulnerability may allow execution of
arbitrary code.
2) The security issue is caused due to the server hostname not being
validated against the domain name in the subject's Common Name (CN)
or subjectAltName fields of X.509 certificates. This can be exploited
to spoof a SSL server via e.g. Man-in-the-Middle (MitM) attacks.
SOLUTION:
Apply updated packages.
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
PROVIDED AND/OR DISCOVERED BY:
1) Dan Rosenberg
2) Reported at the ACM CCS 2012 conference.
ORIGINAL ADVISORY:
USN-1642-1:
http://www.ubuntu.com/usn/usn-1642-1/
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
DEEP LINKS:
Further details available in Customer Area:
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EXTENDED DESCRIPTION:
Further details available in Customer Area:
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EXTENDED SOLUTION:
Further details available in Customer Area:
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EXPLOIT:
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http://secunia.com/vulnerability_intelligence/
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