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.
*CVSS:
| Base Score: | 8 |
| Access Vector: | Remote |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.9 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
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.
References:
- BugTraq Mailing List, Mon Nov 27 2006 - 11:13:02 CST : GnuPG 1.4 and 2.0 buffer overflow.
- 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
Platforms Affected:
- Canonical Ubuntu 5.10
- Canonical Ubuntu 6.06 LTS
- 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
- MandrakeSoft Mandrake Linux 2006 X86_64
- MandrakeSoft Mandrake Linux 2007 X86_64
- MandrakeSoft Mandrake Linux 2007
- 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 ES
- RedHat Enterprise Linux 2.1 AS
- RedHat Enterprise Linux 3 Desktop
- RedHat Enterprise Linux 3 WS
- RedHat Enterprise Linux 3 ES
- RedHat Enterprise Linux 3 AS
- RedHat Enterprise Linux 4 Desktop
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux AS
- RedHat Enterprise Linux WS
- RedHat Enterprise Linux ES
- RedHat Linux Advanced Workstation 2.1 Itanium
Reported:
Nov 27, 2006
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.