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GnuPG HTTP Keyserver Protocol Interface Format String Vulnerability
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Secunia Advisory:
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SA10348
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Release Date:
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2003-12-04
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Last Update:
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2003-12-12
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Popularity:
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8,071 views
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Critical:
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Less critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | GnuPG / gpg 1.2.x
GnuPG / gpg 1.3.x
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| CVE reference: | CVE-2003-0978
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Description:
A vulnerability has been reported in GnuPG, which potentially can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to a format string error in the HKP (HTTP Keyserver Protocol) interface used for retrieval of public keys from HKP keyservers. This can potentially be exploited by a malicious keyserver to execute arbitrary code on a vulnerable system.
The vulnerability has been reported in versions 1.2.3 and 1.3.3.
NOTE: The HKP interface is experimental and not enabled by default in the 1.2 branch.
Solution:
The vulnerability has been addressed in CVS for the 1.2 branch and in development version 1.3.4.
Secunia recommends that experimental functionality always is disabled on production systems.
Provided and/or discovered by:
Evgeny Legerov, S-Quadra.
Changelog:
2003-12-12: Added CVE reference.
Original Advisory:
GnuPG 1.2.3, 1.3.3 external HKP interface format string issue:
http://www.s-quadra.com/advisories/Adv-20031203.txt
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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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