Home / vulnerabilities Secunia Security Advisory 51824
Posted on 08 February 2013
Source : packetstormsecurity.org Link
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TITLE:
GnuTLS TLS CBC Ciphersuite Plaintext Recovery Weakness
SECUNIA ADVISORY ID:
SA51824
VERIFY ADVISORY:
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http://secunia.com/advisories/51824/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=51824
RELEASE DATE:
2013-02-07
DISCUSS ADVISORY:
http://secunia.com/advisories/51824/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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* Impact
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* CVE Reference(s)
http://secunia.com/advisories/51824/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=51824
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http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A weakness has been reported in GnuTLS, which can be exploited by
malicious people to disclose certain sensitive information.
The weakness is caused due to the CBC ciphersuite of the Transport
Layer Security (TLS) implementation exposing timing differences when
verifying the padding checks. This can be exploited to recover parts
of the plaintext via a timing attack.
The weakness is reported in versions prior to 3.1.7, 3.0.28, and
2.12.23.
SOLUTION:
Update to version 3.1.7, 3.0.28, or 2.12.23.
PROVIDED AND/OR DISCOVERED BY:
Nadhem Alfardan and Kenny Paterson.
ORIGINAL ADVISORY:
GNUTLS-SA-2013-1:
http://www.gnutls.org/security.html
http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/6586
Nadhem Alfardan and Kenny Paterson:
http://www.isg.rhul.ac.uk/tls/
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
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