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OpenPKG Security Advisory The OpenPKG Project
http://www.openpkg.org/security/ http://www.openpkg.org
openpkg-security@openpkg.org openpkg@openpkg.org
OpenPKG-SA-2006.021 28-Sep-2006
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Package: openssl
Vulnerability: denial of service
OpenPKG Specific: no
Affected Releases: Affected Packages: Corrected Packages:
OpenPKG CURRENT <= openssl-0.9.8c-20060905 >= openssl-0.9.8d-20060928
OpenPKG 2-STABLE <= openssl-0.9.8c-2.20060906 >= openssl-0.9.8d-2.20060928
OpenPKG 2.5-RELEASE <= openssl-0.9.8a-2.5.2 >= openssl-0.9.8a-2.5.3
Description:
According to a vendor security advisory [0], four security issues
were discovered in the cryptography and SSL/TLS toolkit OpenSSL [1]:
1. ASN.1 Denial of Service Attack (1/2)
During the parsing of certain invalid ASN.1 structures an error
condition is mishandled. This can result in an infinite loop which
consumes system memory. The Common Vulnerabilities and Exposures
(CVE) project assigned the id CVE-2006-2937 [2] to the problem.
2. ASN.1 Denial of Service Attack (2/2)
Certain types of public key can take disproportionate amounts of
time to process. This could be used by an attacker in a denial of
service attack. The Common Vulnerabilities and Exposures (CVE)
project assigned the id CVE-2006-2940 [3] to the problem.
3. SSL_get_shared_ciphers() Buffer Overflow
A buffer overflow was discovered in the SSL_get_shared_ciphers()
utility function. An attacker could send a list of ciphers to an
application that uses this function and overrun a buffer. The
Common Vulnerabilities and Exposures (CVE) project assigned the id
CVE-2006-3780 [4] to the problem.
4. SSLv2 Client Crash
A flaw in the SSLv2 client code was discovered. When a client
application used OpenSSL to create an SSLv2 connection to a
malicious server, that server could cause the client to crash. The
Common Vulnerabilities and Exposures (CVE) project assigned the id
CVE-2006-4343 [5] to the problem.
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References:
[0] http://www.openssl.org/news/secadv_20060928.txt
[1] http://www.openssl.org/
[2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2937
[3] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2940
[4] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3738
[5] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4343
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For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG <openpkg@openpkg.org>" (ID 63C4CB9F) of the
OpenPKG project which you can retrieve from http://pgp.openpkg.org and
hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org
for details on how to verify the integrity of this advisory.
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