GnuPG ask_outfile_name() function buffer overflow
| gnupg-askoutfilename-bo (30550) |  High Risk |
Description:
GnuPG is vulnerable to a buffer overflow, caused by improper bounds checking by the ask_outfile_name() function in the openfile.c file. By sending a specially-crafted message with an invalid 'n' size, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
Note: Applications must be running in interactive mode for this vulnerability to exist.
Platforms Affected:
- Canonical, Ubuntu 6.10
- Debian, Debian Linux 3.1
- Gentoo, Linux
- GNU, Privacy Guard 1.4.5
- GNU, Privacy Guard 2.0.0
- MandrakeSoft, Mandrake Linux 2006 X86_64
- MandrakeSoft, Mandrake Linux 2006
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0
- MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft, Mandrake Multi Network Firewall 2.0
- OpenPKG, OpenPKG 2-STABLE
- OpenPKG, OpenPKG CURRENT
- OpenPKG, OpenPKG Enterprise E1.0-SOLID
- RedHat, Enterprise Linux 2.1 WS
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 3 ES
- RedHat, Enterprise Linux 3 AS
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux ES
- RedHat, Enterprise Linux AS
- RedHat, Enterprise Linux WS
- RedHat, Linux Advanced Workstation 2.1 Itanium
Remedy:
Apply the patch for this vulnerability, as listed in the BugTraq Mailing List posting dated Mon Nov 27 2006 - 11:13:02 CST. See References.
For Debian GNU/Linux:
Refer to DSA-1231-1 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux:
Refer to RHSA-2006:0754-2 for patch, upgrade, or suggested workaround information. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 200612-03 for patch, upgrade, or suggested workaround information. See References.
For OpenPKG Linux:
Refer to OpenPKG Linux Security Advisory SA-2006.037 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux:
Refer to Gentoo Linux Security Announcement USN-393-2 for patch, upgrade, or suggested workaround information. See References.
Consequences:
Gain Access
References:
- BugTraq Mailing List, Mon Nov 27 2006 - 11:13:02 CST , GnuPG 1.4 and 2.0 buffer overflow at http://archives.neohapsis.com/archives/bugtraq/2006-11/0541.html.
- GnuPG.org, Download at http://www.gnupg.org/download/.
- ASA-2007-047: gnupg security update (RHSA-2006-0754)
- BID-21306: GnuPG Make_Printable_String Remote Buffer Overflow Vulnerability
- CVE-2006-6169: Heap-based buffer overflow in the ask_outfile_name function in openfile.c for GnuPG (gpg) 1.4 and 2.0, when running interactively, might allow attackers to execute arbitrary code via messages with C-escape expansions, which cause the make_printable_string function to return a longer string than expected while constructing a prompt.
- DSA-1231: gnupg -- several vulnerabilities
- GLSA-200612-03: GnuPG: Multiple vulnerabilities
- MDKSA-2006:221: Updated gnupg packages fix vulnerability
- OpenPKG-SA-2006.037: GnuPG
- RHSA-2006-0754: Important: gnupg security update
- SA23094: GnuPG "make_printable_string()" Buffer Overflow Vulnerability
- SA24047: Avaya Products GnuPG Multiple Vulnerabilities
- SECTRACK ID: 1017291: GnuPG Interactive Mode Buffer Overflow in make_printable_string() May Let Users Execute Arbitrary Code
- USN-389-1: GnuPG vulnerability
- USN-393-2: GnuPG2 vulnerabilities
- VUPEN/ADV-2006-4736: GnuPG ask_outfile_name() Function Client-Side Buffer Overflow Vulnerability
Reported:
Nov 27, 2006
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