Synopsis

Critical: gnutls security update

Type/Severity

Security Advisory: Critical

Topic

Updated gnutls packages that fix several security issues are now available
for Red Hat Enterprise Linux 5.

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

Description

The GnuTLS Library provides support for cryptographic algorithms and
protocols such as TLS. GnuTLS includes libtasn1, a library developed for
ASN.1 structures management that includes DER encoding and decoding.

Flaws were found in the way GnuTLS handles malicious client connections. A
malicious remote client could send a specially crafted request to a service
using GnuTLS that could cause the service to crash. (CVE-2008-1948,
CVE-2008-1949, CVE-2008-1950)

We believe it is possible to leverage the flaw CVE-2008-1948 to execute
arbitrary code but have been unable to prove this at the time of releasing
this advisory. Red Hat Enterprise Linux 5 includes applications, such as
CUPS, that would be directly vulnerable to any such an exploit, however.
Consequently, we have assigned it critical severity.

Users of GnuTLS are advised to upgrade to these updated packages, which
contain a backported patch that corrects these issues.

Solution

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Server - Extended Update Support 5.1 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support 5.1 ia64
• Red Hat Enterprise Linux Server - Extended Update Support 5.1 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 5.1 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 5.1 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 447461 - CVE-2008-1948 GNUTLS-SA-2008-1-1 GnuTLS buffer overflow
• BZ - 447462 - CVE-2008-1949 GNUTLS-SA-2008-1-2 GnuTLS null-pointer dereference
• BZ - 447463 - CVE-2008-1950 GNUTLS-SA-2008-1-3 GnuTLS memory overread flaw

CVEs

• CVE-2008-1949
• CVE-2008-1948
• CVE-2008-1950

References

• http://www.redhat.com/security/updates/classification/#critical

Red Hat Enterprise Linux Server 5

SRPM
gnutls-1.4.1-3.el5_1.src.rpm	SHA-256: 2003bfe9be78af65c0a799a00afef7dbf26113ab7497ce61a4975474809675f0
x86_64
gnutls-1.4.1-3.el5_1.i386.rpm	SHA-256: 24fae4f41b42f12c4aa7fc2283d42a71d874d9d1a2c0432809320363afa6659b
gnutls-1.4.1-3.el5_1.x86_64.rpm	SHA-256: cbadfd3d9553f7b1b6b7a91cae97d566121244b794a6485c5bfbadfa2b3d92ff
gnutls-devel-1.4.1-3.el5_1.i386.rpm	SHA-256: cc0eaef4c01e68800532d08ccfc8f6c0e91d83765588757aec273e6fb5829892
gnutls-devel-1.4.1-3.el5_1.x86_64.rpm	SHA-256: 396306ff470b16c86fffa8fe7821550bd626172229e70b407573cb1b0a2e29ea
gnutls-utils-1.4.1-3.el5_1.x86_64.rpm	SHA-256: 8d6ec98d5ada45de9f2e4116184550f1230bc8f4bb0e47ef5f1e880279eb4565
ia64
gnutls-1.4.1-3.el5_1.i386.rpm	SHA-256: 24fae4f41b42f12c4aa7fc2283d42a71d874d9d1a2c0432809320363afa6659b
gnutls-1.4.1-3.el5_1.ia64.rpm	SHA-256: afa6fc64004723684bad4272d20b551cb05725670dc083e4e94b1ccbe4076f65
gnutls-devel-1.4.1-3.el5_1.ia64.rpm	SHA-256: 04f596089356589d441a6a0284aa724f23c706b8ee594e7b079930a708945100
gnutls-utils-1.4.1-3.el5_1.ia64.rpm	SHA-256: d0a8ee8605890e008a361fc03234e2fcd448fe53a6293de36fa20061befb840f
i386
gnutls-1.4.1-3.el5_1.i386.rpm	SHA-256: 24fae4f41b42f12c4aa7fc2283d42a71d874d9d1a2c0432809320363afa6659b
gnutls-devel-1.4.1-3.el5_1.i386.rpm	SHA-256: cc0eaef4c01e68800532d08ccfc8f6c0e91d83765588757aec273e6fb5829892
gnutls-utils-1.4.1-3.el5_1.i386.rpm	SHA-256: fda54803dcb44620e7805e3e76c3e4ac430234bbeacb7d91d55875ba153a98d5

Red Hat Enterprise Linux Workstation 5

SRPM
gnutls-1.4.1-3.el5_1.src.rpm	SHA-256: 2003bfe9be78af65c0a799a00afef7dbf26113ab7497ce61a4975474809675f0
x86_64
gnutls-1.4.1-3.el5_1.i386.rpm	SHA-256: 24fae4f41b42f12c4aa7fc2283d42a71d874d9d1a2c0432809320363afa6659b
gnutls-1.4.1-3.el5_1.x86_64.rpm	SHA-256: cbadfd3d9553f7b1b6b7a91cae97d566121244b794a6485c5bfbadfa2b3d92ff
gnutls-devel-1.4.1-3.el5_1.i386.rpm	SHA-256: cc0eaef4c01e68800532d08ccfc8f6c0e91d83765588757aec273e6fb5829892
gnutls-devel-1.4.1-3.el5_1.x86_64.rpm	SHA-256: 396306ff470b16c86fffa8fe7821550bd626172229e70b407573cb1b0a2e29ea
gnutls-utils-1.4.1-3.el5_1.x86_64.rpm	SHA-256: 8d6ec98d5ada45de9f2e4116184550f1230bc8f4bb0e47ef5f1e880279eb4565
i386
gnutls-1.4.1-3.el5_1.i386.rpm	SHA-256: 24fae4f41b42f12c4aa7fc2283d42a71d874d9d1a2c0432809320363afa6659b
gnutls-devel-1.4.1-3.el5_1.i386.rpm	SHA-256: cc0eaef4c01e68800532d08ccfc8f6c0e91d83765588757aec273e6fb5829892
gnutls-utils-1.4.1-3.el5_1.i386.rpm	SHA-256: fda54803dcb44620e7805e3e76c3e4ac430234bbeacb7d91d55875ba153a98d5

Red Hat Enterprise Linux Desktop 5

SRPM
gnutls-1.4.1-3.el5_1.src.rpm	SHA-256: 2003bfe9be78af65c0a799a00afef7dbf26113ab7497ce61a4975474809675f0
x86_64
gnutls-1.4.1-3.el5_1.i386.rpm	SHA-256: 24fae4f41b42f12c4aa7fc2283d42a71d874d9d1a2c0432809320363afa6659b
gnutls-1.4.1-3.el5_1.x86_64.rpm	SHA-256: cbadfd3d9553f7b1b6b7a91cae97d566121244b794a6485c5bfbadfa2b3d92ff
gnutls-utils-1.4.1-3.el5_1.x86_64.rpm	SHA-256: 8d6ec98d5ada45de9f2e4116184550f1230bc8f4bb0e47ef5f1e880279eb4565
i386
gnutls-1.4.1-3.el5_1.i386.rpm	SHA-256: 24fae4f41b42f12c4aa7fc2283d42a71d874d9d1a2c0432809320363afa6659b
gnutls-utils-1.4.1-3.el5_1.i386.rpm	SHA-256: fda54803dcb44620e7805e3e76c3e4ac430234bbeacb7d91d55875ba153a98d5

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
gnutls-1.4.1-3.el5_1.src.rpm	SHA-256: 2003bfe9be78af65c0a799a00afef7dbf26113ab7497ce61a4975474809675f0
s390x
gnutls-1.4.1-3.el5_1.s390.rpm	SHA-256: a0b53b800a956605db6565a02a77a913dd83244a48f14a408c98d9d7ac0297fb
gnutls-1.4.1-3.el5_1.s390x.rpm	SHA-256: 9577fff36dc553b39128a310bb33dd3177477625c2642ce35e7cd31de899b9ee
gnutls-devel-1.4.1-3.el5_1.s390.rpm	SHA-256: c7af1e2402fe3959176953f4ad6dd85d5bc2294764fd2138d2313a984b52ee37
gnutls-devel-1.4.1-3.el5_1.s390x.rpm	SHA-256: 68bc215b34ee403a410f3e407aa5a90b1f37f50817a1fe6d54d61279299aba08
gnutls-utils-1.4.1-3.el5_1.s390x.rpm	SHA-256: 4a4ea96d8f6b4be0f2d0eb2309c8f46d321a274bd1c66cf692e068cc8d7c8b7b

Red Hat Enterprise Linux for Power, big endian 5

SRPM
gnutls-1.4.1-3.el5_1.src.rpm	SHA-256: 2003bfe9be78af65c0a799a00afef7dbf26113ab7497ce61a4975474809675f0
ppc
gnutls-1.4.1-3.el5_1.ppc.rpm	SHA-256: 06ed58f17c3189a927c6be410d73d0960d2c5ba7a19f203cc6a4b4e51d8cd765
gnutls-1.4.1-3.el5_1.ppc64.rpm	SHA-256: 93901cfe69ec989edaa526709e6ea37f541d283f76156e0f0973157d60bd90d2
gnutls-devel-1.4.1-3.el5_1.ppc.rpm	SHA-256: 72ecdab671da54cb7c9502194cc50eedb7e078c44dd923958106bfe25e99c42e
gnutls-devel-1.4.1-3.el5_1.ppc64.rpm	SHA-256: f9f63c59d1a6a89b0b7e23564f24d7b5978324e271cfc631d1b1537481907d6a
gnutls-utils-1.4.1-3.el5_1.ppc.rpm	SHA-256: 9cde639441cc53e5c934830b5951d6f0ea888cd7085b39b608ab4f4adcefd6e2

Red Hat Enterprise Linux Server from RHUI 5

SRPM
gnutls-1.4.1-3.el5_1.src.rpm	SHA-256: 2003bfe9be78af65c0a799a00afef7dbf26113ab7497ce61a4975474809675f0
x86_64
gnutls-1.4.1-3.el5_1.i386.rpm	SHA-256: 24fae4f41b42f12c4aa7fc2283d42a71d874d9d1a2c0432809320363afa6659b
gnutls-1.4.1-3.el5_1.x86_64.rpm	SHA-256: cbadfd3d9553f7b1b6b7a91cae97d566121244b794a6485c5bfbadfa2b3d92ff
gnutls-devel-1.4.1-3.el5_1.i386.rpm	SHA-256: cc0eaef4c01e68800532d08ccfc8f6c0e91d83765588757aec273e6fb5829892
gnutls-devel-1.4.1-3.el5_1.x86_64.rpm	SHA-256: 396306ff470b16c86fffa8fe7821550bd626172229e70b407573cb1b0a2e29ea
gnutls-utils-1.4.1-3.el5_1.x86_64.rpm	SHA-256: 8d6ec98d5ada45de9f2e4116184550f1230bc8f4bb0e47ef5f1e880279eb4565
i386
gnutls-1.4.1-3.el5_1.i386.rpm	SHA-256: 24fae4f41b42f12c4aa7fc2283d42a71d874d9d1a2c0432809320363afa6659b
gnutls-devel-1.4.1-3.el5_1.i386.rpm	SHA-256: cc0eaef4c01e68800532d08ccfc8f6c0e91d83765588757aec273e6fb5829892
gnutls-utils-1.4.1-3.el5_1.i386.rpm	SHA-256: fda54803dcb44620e7805e3e76c3e4ac430234bbeacb7d91d55875ba153a98d5