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Red Hat Product Errata RHBA-2015:1294 - Bug Fix Advisory
Issued:
2015-07-22
Updated:
2015-07-22

RHBA-2015:1294 - Bug Fix Advisory

  • Overview
  • Updated Packages

Synopsis

tcpdump bug fix and enhancement update

Type/Severity

Bug Fix Advisory

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

Updated tcpdump packages that fix two bugs and add two enhancements are now
available for Red Hat Enterprise Linux 6.

Description

The tcpdump packages contain a command-line tool for monitoring network traffic.
Tcpdump can capture and display the packet headers on a particular
network interface or on all interfaces. Tcpdump can display all of the packet
headers, or just the ones that match particular criteria.

This update fixes the following bugs:

  • Previously, the tcpdump utility was treating the argument for the "-i" option

as a number if it contained a numeric prefix and other characters, not as a
string. Consequently, packet capturing was not started on a specified interface
at all or could get started on a incorrect interface. With this update, the
argument for "-i" is treated as a number only if it contains only numerals 0-9;
otherwise, the argument is treated as a string. For example, interface names
such as "192_1_2" are no longer treated as interface number 192, but as a
string. As a result, tcpdump starts correctly on a specified interface even if
the interface name contains a numeric prefix. (BZ#972396)

  • The tcpdump Cisco Discovery Protocol (CDP) dissector previously stopped

parsing packet prematurely after encountering Type-Length-Value (TLV) field
which had the length of 0 and no data associated with it. Consequently, some CDP
packets were not completely dissected. A patch which alters code deciding when
to stop parsing the packet has been applied to fix this bug. Now, zero length
data TLVs are allowed, and CDP packets containing such TLVs are parsed
correctly. (BZ#1130111)

In addition, this update adds the following enhancements:

  • The kernel, glibc, and libpcap utilities now provide APIs to obtain nanosecond

resolutions timestamps. The user can thus query which timestamp sources are
available ("-J"), set a specific timestamp source ("-j"), and request timestamps
with a specified resolution ("--time-stamp-precision"). (BZ#1045601)

  • This update adds the new "-P" command-line argument for capturing packets in

certain direction, which can ease debugging networking-related problems.
(BZ#1099701)

Users of tcpdump are advised to upgrade to these updated packages, which fix
these bugs and add these enhancements.

Solution

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

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux Server 6 x86_64
  • Red Hat Enterprise Linux Server 6 i386
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
  • Red Hat Enterprise Linux Workstation 6 x86_64
  • Red Hat Enterprise Linux Workstation 6 i386
  • Red Hat Enterprise Linux Desktop 6 x86_64
  • Red Hat Enterprise Linux Desktop 6 i386
  • Red Hat Enterprise Linux for IBM z Systems 6 s390x
  • Red Hat Enterprise Linux for Power, big endian 6 ppc64
  • Red Hat Enterprise Linux for Scientific Computing 6 x86_64
  • Red Hat Enterprise Linux Server from RHUI 6 x86_64
  • Red Hat Enterprise Linux Server from RHUI 6 i386
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

  • BZ - 972396 - TCPDUMP "INVALID ADAPTER INDEX" ON INTERFACE WHICH NAME STARTS AS NUMBER
  • BZ - 1045601 - Allow tcpdump to support libpcap nanosecond timestamping

CVEs

(none)

References

(none)

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

Red Hat Enterprise Linux Server 6

SRPM
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.src.rpm SHA-256: c7b088e0a6c0a33cdf2a5de474149cd603316868b52a30cd51212b7119c6fff8
x86_64
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: 42ff29daa3053f7371e7b028fc54bce2346318505086d40b504e9e56f67f53c4
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: f6e0bd545f0f227628e0dcafb4aaa8e29f8acbcba8a6801561cfd651862452e8
i386
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: 9de39a1078c416109c3d26d1e01f859dd1936e586a50783997cf1f1a52f628bc
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: a2d9b13d9c669e851120ab4d1908924295892601388706611cb608ef43dc141e

Red Hat Enterprise Linux Server - Extended Life Cycle Support 6

SRPM
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.src.rpm SHA-256: c7b088e0a6c0a33cdf2a5de474149cd603316868b52a30cd51212b7119c6fff8
x86_64
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: 42ff29daa3053f7371e7b028fc54bce2346318505086d40b504e9e56f67f53c4
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: f6e0bd545f0f227628e0dcafb4aaa8e29f8acbcba8a6801561cfd651862452e8
i386
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: 9de39a1078c416109c3d26d1e01f859dd1936e586a50783997cf1f1a52f628bc
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: a2d9b13d9c669e851120ab4d1908924295892601388706611cb608ef43dc141e

Red Hat Enterprise Linux Workstation 6

SRPM
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.src.rpm SHA-256: c7b088e0a6c0a33cdf2a5de474149cd603316868b52a30cd51212b7119c6fff8
x86_64
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: 42ff29daa3053f7371e7b028fc54bce2346318505086d40b504e9e56f67f53c4
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: f6e0bd545f0f227628e0dcafb4aaa8e29f8acbcba8a6801561cfd651862452e8
i386
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: 9de39a1078c416109c3d26d1e01f859dd1936e586a50783997cf1f1a52f628bc
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: a2d9b13d9c669e851120ab4d1908924295892601388706611cb608ef43dc141e

Red Hat Enterprise Linux Desktop 6

SRPM
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.src.rpm SHA-256: c7b088e0a6c0a33cdf2a5de474149cd603316868b52a30cd51212b7119c6fff8
x86_64
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: 42ff29daa3053f7371e7b028fc54bce2346318505086d40b504e9e56f67f53c4
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: f6e0bd545f0f227628e0dcafb4aaa8e29f8acbcba8a6801561cfd651862452e8
i386
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: 9de39a1078c416109c3d26d1e01f859dd1936e586a50783997cf1f1a52f628bc
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: a2d9b13d9c669e851120ab4d1908924295892601388706611cb608ef43dc141e

Red Hat Enterprise Linux for IBM z Systems 6

SRPM
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.src.rpm SHA-256: c7b088e0a6c0a33cdf2a5de474149cd603316868b52a30cd51212b7119c6fff8
s390x
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.s390x.rpm SHA-256: dc77c7cef87d1ffc562f7dfbd8f9f477121459d28eccda09e0cd22f24d2b275b
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.s390x.rpm SHA-256: 7b423f7b2e98eb2a675085a4de961a9a89c771471c5dfa713344cac4f4095588

Red Hat Enterprise Linux for Power, big endian 6

SRPM
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.src.rpm SHA-256: c7b088e0a6c0a33cdf2a5de474149cd603316868b52a30cd51212b7119c6fff8
ppc64
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.ppc64.rpm SHA-256: 6eec8b5ffd6d09d35b515e8d87ac0f5da16129c34e1c20a8b44e80c1db85f093
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.ppc64.rpm SHA-256: 16f73faf990949d329b6656e4f8fb45ff77497660ae04a255cc0ff5aa2794700

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.src.rpm SHA-256: c7b088e0a6c0a33cdf2a5de474149cd603316868b52a30cd51212b7119c6fff8
x86_64
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: 42ff29daa3053f7371e7b028fc54bce2346318505086d40b504e9e56f67f53c4
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: f6e0bd545f0f227628e0dcafb4aaa8e29f8acbcba8a6801561cfd651862452e8

Red Hat Enterprise Linux Server from RHUI 6

SRPM
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.src.rpm SHA-256: c7b088e0a6c0a33cdf2a5de474149cd603316868b52a30cd51212b7119c6fff8
x86_64
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: 42ff29daa3053f7371e7b028fc54bce2346318505086d40b504e9e56f67f53c4
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.x86_64.rpm SHA-256: f6e0bd545f0f227628e0dcafb4aaa8e29f8acbcba8a6801561cfd651862452e8
i386
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: 9de39a1078c416109c3d26d1e01f859dd1936e586a50783997cf1f1a52f628bc
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.i686.rpm SHA-256: a2d9b13d9c669e851120ab4d1908924295892601388706611cb608ef43dc141e

Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6

SRPM
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.src.rpm SHA-256: c7b088e0a6c0a33cdf2a5de474149cd603316868b52a30cd51212b7119c6fff8
s390x
tcpdump-4.0.0-5.20090921gitdf3cb4.2.el6.s390x.rpm SHA-256: dc77c7cef87d1ffc562f7dfbd8f9f477121459d28eccda09e0cd22f24d2b275b
tcpdump-debuginfo-4.0.0-5.20090921gitdf3cb4.2.el6.s390x.rpm SHA-256: 7b423f7b2e98eb2a675085a4de961a9a89c771471c5dfa713344cac4f4095588

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

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