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Network Security Services SSLv2 Processing Buffer Overflows
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Secunia Advisory:
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SA24253
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Release Date:
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2007-02-24
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Last Update:
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2007-03-08
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Popularity:
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8,600 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | Network Security Services (NSS) 3.x
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| CVE reference: | CVE-2007-0008
CVE-2007-0009
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Description:
Two vulnerabilities have been reported in Network Security Services (NSS), which potentially can be exploited by malicious people to compromise a vulnerable system.
1) An integer underflow error when processing SSLv2 server messages can be exploited to cause a heap-based buffer overflow via a certificate with a public key too small to encrypt the "Master Secret".
2) An integer underflow error when processing SSLv2 client master keys can be exploited to cause a stack-based buffer overflow via specially crafted parameters during an SSLv2 handshake.
Successful exploitation of the vulnerabilities may allow execution of arbitrary code.
The vulnerabilities are reported in versions 3.10 and 3.11.3. Other versions may also be affected.
Solution:
The vulnerabilities will be fixed in version 3.11.5.
Provided and/or discovered by:
Discovered by regenrecht and reported via iDefense Labs.
Changelog:
2007-03-08: Added links to US-CERT.
Original Advisory:
Mozilla Foundation:
http://www.mozilla.org/security/announce/2007/mfsa2007-06.html
iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=482
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=483
Other References:
US-CERT VU#377812:
http://www.kb.cert.org/vuls/id/377812
US-CERT VU#592796:
http://www.kb.cert.org/vuls/id/592796
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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