Issued:
2012-02-20
Updated:
2012-02-20

RHBA-2011:1462 - hmaccalc bug fix update

Synopsis

hmaccalc bug fix update

Type/Severity

Bug Fix Advisory (none)

Topic

An updated hmaccalc package that fixes a bug is now available for Red Hat Enterprise Linux 5.

Description

The hmaccalc package contains tools to calculate HMAC (Hash-based Message Authentication Code) values for files. The names and interfaces were designed to mimic those of the sha1sum, sha256sum, sha384sum and sha512sum tools provided by the coreutils package.

This updated hmaccalc package fixes the following bug:

  • Prior to this update, hmaccalc erroneously truncated the values which it read from a checkfile before comparing them with the computed values. Consequently, comparison between differently truncated sums of files passed in some cases. This update backports a change which modifies the hmaccalc tool so that when it is used to verify checksums, if it is told to truncate computed values during a verification operation, it will not truncate the values which it reads from a checkfile before comparing them with the computed values. As a result hmaccalc correctly detects differences in hmac values. (BZ#658178).

All users of hmaccalc are advised to upgrade to this updated package, which fixes this bug.

Solution

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

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Power, big endian5ppc
Red Hat Enterprise Linux for IBM z Systems5s390x
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Workstation5i386
Red Hat Enterprise Linux Server5x86_64
Red Hat Enterprise Linux Server5ia64
Red Hat Enterprise Linux Server5i386
Red Hat Enterprise Linux Server from RHUI5x86_64
Red Hat Enterprise Linux Server from RHUI5i386
Red Hat Enterprise Linux Desktop5x86_64
Red Hat Enterprise Linux Desktop5i386

Updated Packages

  • hmaccalc-0.9.6-4.el5.ia64.rpm
  • hmaccalc-0.9.6-4.el5.ppc.rpm
  • hmaccalc-0.9.6-4.el5.src.rpm
  • hmaccalc-0.9.6-4.el5.s390x.rpm
  • hmaccalc-0.9.6-4.el5.i386.rpm
  • hmaccalc-0.9.6-4.el5.x86_64.rpm

Fixes

CVEs

(none)

References

(none)

Additional information