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TITLE:
echoping Two Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA42619

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42619/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42619

RELEASE DATE:
2010-12-20

DISCUSS ADVISORY:
http://secunia.com/advisories/42619/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Criticality Level
 * Impact
 * Where
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 * CVE Reference(s)

http://secunia.com/advisories/42619/

ONLY AVAILABLE IN CUSTOMER AREA:
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42619

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Some vulnerabilities have been discovered in echoping, which can be
exploited by malicious people to potentially compromise a user's
system.

1) A boundary error exists within the "TLS_readline()" function in
readline.c, which can be exploited to overflow a global buffer by
sending an overly long encrypted HTTP reply to echoping.

Successful exploitation requires that echoping is compiled with GNU
TLS support.

2) A boundary error exists within the "SSL_readline()" function in
readline.c, which can be exploited to overflow a global buffer by
sending an overly long encrypted HTTP reply to echoping.

Successful exploitation requires that echoping is compiled with SSL
support.

The vulnerabilities are confirmed in version 6.0.2. Other versions
may also be affected.

SOLUTION:
Do not use echoping to ping untrusted servers.

PROVIDED AND/OR DISCOVERED BY:
Reported in a Debian bug by Dmitry Semyonov.

Additional information provided by Secunia Research.

ORIGINAL ADVISORY:
Debian Bug #606808:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=606808

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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