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Red Hat Product Errata RHSA-2006:0266 - Security Advisory
Issued:
2006-03-15
Updated:
2006-03-15

RHSA-2006:0266 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

gnupg security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An updated GnuPG package that fixes signature verification flaws as well as
minor bugs is now available.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

Description

GnuPG is a utility for encrypting data and creating digital signatures.

Tavis Ormandy discovered a bug in the way GnuPG verifies cryptographically
signed data with detached signatures. It is possible for an attacker to
construct a cryptographically signed message which could appear to come
from a third party. When a victim processes a GnuPG message with a
malformed detached signature, GnuPG ignores the malformed signature,
processes and outputs the signed data, and exits with status 0, just as it
would if the signature had been valid. In this case, GnuPG's exit status
would not indicate that no signature verification had taken place. This
issue would primarily be of concern when processing GnuPG results via an
automated script. The Common Vulnerabilities and Exposures project assigned
the name CVE-2006-0455 to this issue.

Tavis Ormandy also discovered a bug in the way GnuPG verifies
cryptographically signed data with inline signatures. It is possible for an
attacker to inject unsigned data into a signed message in such a way that
when a victim processes the message to recover the data, the unsigned data
is output along with the signed data, gaining the appearance of having been
signed. This issue is mitigated in the GnuPG shipped with Red Hat
Enterprise Linux as the --ignore-crc-error option must be passed to the gpg
executable for this attack to be successful. The Common Vulnerabilities and
Exposures project assigned the name CVE-2006-0049 to this issue.

Please note that neither of these issues affect the way RPM or up2date
verify RPM package files, nor is RPM vulnerable to either of these issues.

All users of GnuPG are advised to upgrade to this updated package, which
contains backported patches to correct these issues.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via Red Hat Network. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Affected Products

  • Red Hat Enterprise Linux Server 4 x86_64
  • Red Hat Enterprise Linux Server 4 ia64
  • Red Hat Enterprise Linux Server 4 i386
  • Red Hat Enterprise Linux Server 3 x86_64
  • Red Hat Enterprise Linux Server 3 ia64
  • Red Hat Enterprise Linux Server 3 i386
  • Red Hat Enterprise Linux Server 2 ia64
  • Red Hat Enterprise Linux Server 2 i386
  • Red Hat Enterprise Linux Workstation 4 x86_64
  • Red Hat Enterprise Linux Workstation 4 ia64
  • Red Hat Enterprise Linux Workstation 4 i386
  • Red Hat Enterprise Linux Workstation 3 x86_64
  • Red Hat Enterprise Linux Workstation 3 ia64
  • Red Hat Enterprise Linux Workstation 3 i386
  • Red Hat Enterprise Linux Workstation 2 ia64
  • Red Hat Enterprise Linux Workstation 2 i386
  • Red Hat Enterprise Linux Desktop 4 x86_64
  • Red Hat Enterprise Linux Desktop 4 i386
  • Red Hat Enterprise Linux Desktop 3 x86_64
  • Red Hat Enterprise Linux Desktop 3 i386
  • Red Hat Enterprise Linux for IBM z Systems 4 s390x
  • Red Hat Enterprise Linux for IBM z Systems 4 s390
  • Red Hat Enterprise Linux for IBM z Systems 3 s390x
  • Red Hat Enterprise Linux for IBM z Systems 3 s390
  • Red Hat Enterprise Linux for Power, big endian 4 ppc
  • Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

  • BZ - 167392 - initial gpg run doesn't create .gnupg/secring.gpg
  • BZ - 179506 - RHEL3, gnupg-1.2.1-10, gpg: Creates corrupt files (probably 2GB problem)
  • BZ - 183484 - CVE-2006-0455 gpg will quietly exit when attempting to verify a malformed message
  • BZ - 184556 - CVE-2006-0049 Gnupg incorrect malformed message verification

CVEs

  • CVE-2006-0049
  • CVE-2006-0455

References

(none)

Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server 4

SRPM
x86_64
gnupg-1.2.6-3.x86_64.rpm SHA-256: 2aa0dcf75d0814ac7a6049bfeab9cc7b39ba6f6dab41693532984dc19909ba15
gnupg-1.2.6-3.x86_64.rpm SHA-256: 2aa0dcf75d0814ac7a6049bfeab9cc7b39ba6f6dab41693532984dc19909ba15
ia64
gnupg-1.2.6-3.ia64.rpm SHA-256: 7268234f36dd489fa1f7ceaa6e49c8c866cc1660869a293d27bdd404e49097b0
gnupg-1.2.6-3.ia64.rpm SHA-256: 7268234f36dd489fa1f7ceaa6e49c8c866cc1660869a293d27bdd404e49097b0
i386
gnupg-1.2.6-3.i386.rpm SHA-256: fd96959fe1f3bb45f594b1ae5b94700e230352336db7b4637ab5487795e348f6
gnupg-1.2.6-3.i386.rpm SHA-256: fd96959fe1f3bb45f594b1ae5b94700e230352336db7b4637ab5487795e348f6

Red Hat Enterprise Linux Server 3

SRPM
x86_64
ia64
i386

Red Hat Enterprise Linux Server 2

SRPM
ia64
i386

Red Hat Enterprise Linux Workstation 4

SRPM
x86_64
gnupg-1.2.6-3.x86_64.rpm SHA-256: 2aa0dcf75d0814ac7a6049bfeab9cc7b39ba6f6dab41693532984dc19909ba15
ia64
gnupg-1.2.6-3.ia64.rpm SHA-256: 7268234f36dd489fa1f7ceaa6e49c8c866cc1660869a293d27bdd404e49097b0
i386
gnupg-1.2.6-3.i386.rpm SHA-256: fd96959fe1f3bb45f594b1ae5b94700e230352336db7b4637ab5487795e348f6

Red Hat Enterprise Linux Workstation 3

SRPM
x86_64
ia64
i386

Red Hat Enterprise Linux Workstation 2

SRPM
ia64
i386

Red Hat Enterprise Linux Desktop 4

SRPM
x86_64
gnupg-1.2.6-3.x86_64.rpm SHA-256: 2aa0dcf75d0814ac7a6049bfeab9cc7b39ba6f6dab41693532984dc19909ba15
i386
gnupg-1.2.6-3.i386.rpm SHA-256: fd96959fe1f3bb45f594b1ae5b94700e230352336db7b4637ab5487795e348f6

Red Hat Enterprise Linux Desktop 3

SRPM
x86_64
i386

Red Hat Enterprise Linux for IBM z Systems 4

SRPM
s390x
gnupg-1.2.6-3.s390x.rpm SHA-256: ec1a367397f62c9216d003c99cd1e40029ca2797842e9f680a514eb43a47b10a
s390
gnupg-1.2.6-3.s390.rpm SHA-256: 915bd04789c8932198b9f9bb37ecca9f5bc729398c7f9a29a97b0566063f7284

Red Hat Enterprise Linux for IBM z Systems 3

SRPM
s390x
s390

Red Hat Enterprise Linux for Power, big endian 4

SRPM
ppc
gnupg-1.2.6-3.ppc.rpm SHA-256: c3455f842b4995a8fca681eb2a01991136c1e776d5e71a61ec24843c32e5fe12

Red Hat Enterprise Linux for Power, big endian 3

SRPM
ppc

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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