Synopsis

Important: httpd security update

Type/Severity

Security Advisory: Important

Topic

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

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

Description

The Apache HTTP Server is a popular Web server.

A denial of service flaw was found in the Apache mod_proxy module when it
was used as a reverse proxy. A remote attacker could use this flaw to force
a proxy process to consume large amounts of CPU time. (CVE-2009-1890)

A denial of service flaw was found in the Apache mod_deflate module. This
module continued to compress large files until compression was complete,
even if the network connection that requested the content was closed before
compression completed. This would cause mod_deflate to consume large
amounts of CPU if mod_deflate was enabled for a large file. (CVE-2009-1891)

All httpd users should upgrade to these updated packages, which contain
backported patches to correct these issues. After installing the updated
packages, the httpd daemon must be restarted for the update to take effect.

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/docs/DOC-11259

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 5.3 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support 5.3 ia64
• Red Hat Enterprise Linux Server - Extended Update Support 5.3 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• 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 5.3 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386
• Red Hat Enterprise Linux Server - AUS 5.3 x86_64
• Red Hat Enterprise Linux Server - AUS 5.3 ia64
• Red Hat Enterprise Linux Server - AUS 5.3 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 5.3 ppc

Fixes

• BZ - 509125 - CVE-2009-1891 httpd: possible temporary DoS (CPU consumption) in mod_deflate
• BZ - 509375 - CVE-2009-1890 httpd: mod_proxy reverse proxy DoS (infinite loop)

CVEs

• CVE-2009-1890
• CVE-2009-1891

References

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

Red Hat Enterprise Linux Server 5

SRPM
httpd-2.2.3-22.el5_3.2.src.rpm	SHA-256: 4e044a255bd3d63d1610ac6e132321b1929d247026d7029c5a0754b2b4fafa62
x86_64
httpd-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 58c1f71fd934f3c63e5cf3767437966546420313ef077847a9a4ff3775336e04
httpd-devel-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 8d64980ab7c3d604747b87d41f7982634f92bde70690386715a852daaf2c4052
httpd-devel-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 5f3538c42caae879fdf308d0e5802f8399bb5dc2429629254e771355beeafb56
httpd-manual-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: b096b3b872e85ae370dd0aad310e4802ae47a5efedbf022f426b6266d9ed8d8a
mod_ssl-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 4ca456ad1386f05a7c1e703863dc1427fc6f26a0b0931d4ad72583987054b2c3
ia64
httpd-2.2.3-22.el5_3.2.ia64.rpm	SHA-256: 7571b0f2f2773613eb3db58f4d77e0b6e25b402e0446e66e85e0ca6d450cde91
httpd-devel-2.2.3-22.el5_3.2.ia64.rpm	SHA-256: 826ce72141d2b2b44d129073b0ee8a5d00d243da8848a1d09c38b936e22668ac
httpd-manual-2.2.3-22.el5_3.2.ia64.rpm	SHA-256: b2e2be22138f3549c88a14e7f0871886681da67eb01f62ad026726059c0545c1
mod_ssl-2.2.3-22.el5_3.2.ia64.rpm	SHA-256: 684d2cefbc102e7e0858eba42da9799cce20f4dd3900a4115b786e54763d41f6
i386
httpd-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 80aac3cf48819d0ad7b84182f3d87f1570f300397d6643d3a42d57511076afda
httpd-devel-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 8d64980ab7c3d604747b87d41f7982634f92bde70690386715a852daaf2c4052
httpd-manual-2.2.3-22.el5_3.2.i386.rpm	SHA-256: a017bafda06a6442dacc4ef07c3935d75dbaf65776bb050cc2124d6b2d4f3233
mod_ssl-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 9e54bf13f891b8aa4df4259a12603f1293442a89a3e65e6fe85fd29a58d4f591

Red Hat Enterprise Linux Workstation 5

SRPM
httpd-2.2.3-22.el5_3.2.src.rpm	SHA-256: 4e044a255bd3d63d1610ac6e132321b1929d247026d7029c5a0754b2b4fafa62
x86_64
httpd-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 58c1f71fd934f3c63e5cf3767437966546420313ef077847a9a4ff3775336e04
httpd-devel-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 8d64980ab7c3d604747b87d41f7982634f92bde70690386715a852daaf2c4052
httpd-devel-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 5f3538c42caae879fdf308d0e5802f8399bb5dc2429629254e771355beeafb56
httpd-manual-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: b096b3b872e85ae370dd0aad310e4802ae47a5efedbf022f426b6266d9ed8d8a
mod_ssl-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 4ca456ad1386f05a7c1e703863dc1427fc6f26a0b0931d4ad72583987054b2c3
i386
httpd-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 80aac3cf48819d0ad7b84182f3d87f1570f300397d6643d3a42d57511076afda
httpd-devel-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 8d64980ab7c3d604747b87d41f7982634f92bde70690386715a852daaf2c4052
httpd-manual-2.2.3-22.el5_3.2.i386.rpm	SHA-256: a017bafda06a6442dacc4ef07c3935d75dbaf65776bb050cc2124d6b2d4f3233
mod_ssl-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 9e54bf13f891b8aa4df4259a12603f1293442a89a3e65e6fe85fd29a58d4f591

Red Hat Enterprise Linux Desktop 5

SRPM
httpd-2.2.3-22.el5_3.2.src.rpm	SHA-256: 4e044a255bd3d63d1610ac6e132321b1929d247026d7029c5a0754b2b4fafa62
x86_64
httpd-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 58c1f71fd934f3c63e5cf3767437966546420313ef077847a9a4ff3775336e04
mod_ssl-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 4ca456ad1386f05a7c1e703863dc1427fc6f26a0b0931d4ad72583987054b2c3
i386
httpd-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 80aac3cf48819d0ad7b84182f3d87f1570f300397d6643d3a42d57511076afda
mod_ssl-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 9e54bf13f891b8aa4df4259a12603f1293442a89a3e65e6fe85fd29a58d4f591

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
httpd-2.2.3-22.el5_3.2.src.rpm	SHA-256: 4e044a255bd3d63d1610ac6e132321b1929d247026d7029c5a0754b2b4fafa62
s390x
httpd-2.2.3-22.el5_3.2.s390x.rpm	SHA-256: 19c40604a4a7daa53d703bdf8c957580ccdbe32e4fe9497d2824a55213db29ac
httpd-devel-2.2.3-22.el5_3.2.s390.rpm	SHA-256: cbdb8f18f7594a701df371237156a80e4a2527859106f00d9c200f68fafc00e1
httpd-devel-2.2.3-22.el5_3.2.s390x.rpm	SHA-256: 03732c6f61d3b21da1918bb8cb9d0e3f17a1734324868028d8d8e8f68bdea5a1
httpd-manual-2.2.3-22.el5_3.2.s390x.rpm	SHA-256: ea4e5ad2d2a989e35429564281b679cb81ce3f25fac0e4ac5fdafc852571ca6a
mod_ssl-2.2.3-22.el5_3.2.s390x.rpm	SHA-256: 7c67b73b1f41591084ae1907149dc74147e2727bb149243297e2bb08217cd7a6

Red Hat Enterprise Linux for Power, big endian 5

SRPM
httpd-2.2.3-22.el5_3.2.src.rpm	SHA-256: 4e044a255bd3d63d1610ac6e132321b1929d247026d7029c5a0754b2b4fafa62
ppc
httpd-2.2.3-22.el5_3.2.ppc.rpm	SHA-256: 6d56fdabb4b8c81be607859829c2d1fdb5c37d46cad6effc9a8eded4210bc233
httpd-devel-2.2.3-22.el5_3.2.ppc.rpm	SHA-256: 958f9db5d701b3ac7a4338bd01105126da10bda93246fa3431d36e8ad73a94d5
httpd-devel-2.2.3-22.el5_3.2.ppc64.rpm	SHA-256: ebd1afd7da78797083260ce3ba698be665e6399a5777127f60b0707d424be4f5
httpd-manual-2.2.3-22.el5_3.2.ppc.rpm	SHA-256: 8d7edf57bf3b13d967e324ff6cecfa39fefc8ad3f4d7953e1297c20715a80f99
mod_ssl-2.2.3-22.el5_3.2.ppc.rpm	SHA-256: 76e16ef49d1b958e917ee4460cd64fc4e082263485f68a61d63d2f7b6f385ccf

Red Hat Enterprise Linux Server from RHUI 5

SRPM
httpd-2.2.3-22.el5_3.2.src.rpm	SHA-256: 4e044a255bd3d63d1610ac6e132321b1929d247026d7029c5a0754b2b4fafa62
x86_64
httpd-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 58c1f71fd934f3c63e5cf3767437966546420313ef077847a9a4ff3775336e04
httpd-devel-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 8d64980ab7c3d604747b87d41f7982634f92bde70690386715a852daaf2c4052
httpd-devel-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 5f3538c42caae879fdf308d0e5802f8399bb5dc2429629254e771355beeafb56
httpd-manual-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: b096b3b872e85ae370dd0aad310e4802ae47a5efedbf022f426b6266d9ed8d8a
mod_ssl-2.2.3-22.el5_3.2.x86_64.rpm	SHA-256: 4ca456ad1386f05a7c1e703863dc1427fc6f26a0b0931d4ad72583987054b2c3
i386
httpd-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 80aac3cf48819d0ad7b84182f3d87f1570f300397d6643d3a42d57511076afda
httpd-devel-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 8d64980ab7c3d604747b87d41f7982634f92bde70690386715a852daaf2c4052
httpd-manual-2.2.3-22.el5_3.2.i386.rpm	SHA-256: a017bafda06a6442dacc4ef07c3935d75dbaf65776bb050cc2124d6b2d4f3233
mod_ssl-2.2.3-22.el5_3.2.i386.rpm	SHA-256: 9e54bf13f891b8aa4df4259a12603f1293442a89a3e65e6fe85fd29a58d4f591