GnuPG parse-packet.c buffer overflow

gnupg-parsepacket-bo (27245) The risk level is classified as HighHigh Risk

Description:

GNU Privacy Guard (GnuPG or GPG) is vulnerable to a buffer overflow, caused by improper bounds checking by the parse_user_id() function in the parse-packet.c file. By sending an overly long user ID, a local or remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.


Consequences:

Gain Access

Remedy:

Apply the patch for this vulnerability, available from the GnuPG CVS Repository. See References.

For Debian GNU/Linux:
Refer to DSA-1107-1 for patch, upgrade, or suggested workaround information. See References.

For Debian GNU/Linux (GnuPG2):
Refer to DSA-1115-1 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux:
Refer to RHSA-2006:0571-4 for patch, upgrade, or suggested workaround information. See References.

For OpenPKG:
Refer to OpenPKG Security Advisory OpenPKG-SA-2006.010 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

References:

  • GnuPG CVS Repository: GnuPG: trunk/g10/parse-packet.c.
  • GnuPG.org: Download.
  • ASA-2006-167: gnupg security update (RHSA-2006-0571)
  • BID-18554: GnuPG Parse_User_ID Remote Buffer Overflow Vulnerability
  • CVE-2006-3082: parse-packet.c in GnuPG (gpg) 1.4.3 and 1.9.20, and earlier versions, allows remote attackers to cause a denial of service (gpg crash) and possibly overwrite memory via a message packet with a large length (long user ID string), which could lead to an integer overflow, as demonstrated using the --no-armor option.
  • DSA-1107: gnupg -- integer overflow
  • DSA-1115: gnupg2 -- integer overflow
  • MDKSA-2006:110: Updated gnupg packages fix vulnerability
  • OpenPKG-SA-2006.010: GNUPG
  • RHSA-2006-0571: gnupg security update
  • SA20783: GnuPG "parse-packet.c" Denial of Service Vulnerability
  • SA21585: Avaya Products GnuPG Denial of Service Vulnerability
  • SECTRACK ID: 1016519: GnuPG Integer Overflow in Processing User ID Values May Let Remote Users Execute Arbitrary Code
  • SUSE-SR:2006:015: SUSE Security Summary Report
  • SUSE-SR:2006:018: SUSE Security Summary Report
  • USN-304-1: GnuPG vulnerability
  • VUPEN/ADV-2006-2450: GnuPG parse_user_id() Packet Length Handling Integer Overflow Vulnerability

Platforms Affected:

  • Canonical Ubuntu 5.04
  • Canonical Ubuntu 5.10
  • Canonical Ubuntu 6.06 LTS
  • Debian Debian Linux 3.0
  • Debian Debian Linux 3.1
  • GNU Privacy Guard 1.0
  • GNU Privacy Guard 1.0.1
  • GNU Privacy Guard 1.0.2
  • GNU Privacy Guard 1.0.3
  • GNU Privacy Guard 1.0.4
  • GNU Privacy Guard 1.0.5
  • GNU Privacy Guard 1.0.6
  • GNU Privacy Guard 1.0.7
  • GNU Privacy Guard 1.2
  • GNU Privacy Guard 1.2.1
  • GNU Privacy Guard 1.2.2
  • GNU Privacy Guard 1.2.3
  • GNU Privacy Guard 1.2.4
  • GNU Privacy Guard 1.2.5
  • GNU Privacy Guard 1.2.6
  • GNU Privacy Guard 1.2.7
  • GNU Privacy Guard 1.3.3
  • GNU Privacy Guard 1.3.4
  • GNU Privacy Guard 1.4
  • GNU Privacy Guard 1.4.1
  • GNU Privacy Guard 1.4.2
  • GNU Privacy Guard 1.4.2.1
  • GNU Privacy Guard 1.4.2.2
  • GNU Privacy Guard 1.4.3
  • GNU Privacy Guard 1.9.10
  • GNU Privacy Guard 1.9.15
  • GNU Privacy Guard 1.9.20
  • MandrakeSoft Mandrake Linux 2006 X86_64
  • MandrakeSoft Mandrake Linux 2006
  • MandrakeSoft Mandrake Linux LE2005
  • MandrakeSoft Mandrake Linux LE2005 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Multi Network Firewall 2.0
  • OpenPKG OpenPKG 2-STABLE
  • OpenPKG OpenPKG 2.5
  • OpenPKG OpenPKG CURRENT
  • RedHat Enterprise Linux 2.1 AS
  • RedHat Enterprise Linux 2.1 ES
  • RedHat Enterprise Linux 2.1 WS
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 AS
  • RedHat Linux Advanced Workstation 2.1 Itanium

Reported:

Jun 09, 2006

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