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Ubuntu Security Notice USN-3367-1

Ubuntu Security Notice USN-3367-1
Posted Jul 26, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3367-1 - Hanno Bock discovered that gdb incorrectly handled certain malformed AOUT headers in PE executables. If a user or automated system were tricked into processing a specially crafted binary, a remote attacker could use this issue to cause gdb to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS. It was discovered that gdb incorrectly handled printing bad bytes in Intel Hex objects. If a user or automated system were tricked into processing a specially crafted binary, a remote attacker could use this issue to cause gdb to crash, resulting in a denial of service. This issue only applied to Ubuntu 14.04 LTS. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2014-8501, CVE-2014-9939, CVE-2016-2226, CVE-2016-4487, CVE-2016-4488, CVE-2016-4489, CVE-2016-4490, CVE-2016-4491, CVE-2016-4492, CVE-2016-4493, CVE-2016-6131
MD5 | 47b1d523dac4f2073a7f6fe03eaf06e7

Ubuntu Security Notice USN-3367-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3367-1
July 26, 2017

gdb vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in gdb.

Software Description:
- gdb: GNU Debugger

Details:

Hanno Bock discovered that gdb incorrectly handled certain malformed AOUT
headers in PE executables. If a user or automated system were tricked into
processing a specially crafted binary, a remote attacker could use this
issue to cause gdb to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS.
(CVE-2014-8501)

It was discovered that gdb incorrectly handled printing bad bytes in Intel
Hex objects. If a user or automated system were tricked into processing a
specially crafted binary, a remote attacker could use this issue to cause
gdb to crash, resulting in a denial of service. This issue only applied to
Ubuntu 14.04 LTS. (CVE-2014-9939)

It was discovered that gdb incorrectly handled certain string operations.
If a user or automated system were tricked into processing a specially
crafted binary, a remote attacker could use this issue to cause gdb to
crash, resulting in a denial of service, or possibly execute arbitrary
code. This issue only applied to Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2016-2226)

It was discovered that gdb incorrectly handled parsing certain binaries. If
a user or automated system were tricked into processing a specially crafted
binary, a remote attacker could use this issue to cause gdb to crash,
resulting in a denial of service. This issue only applied to Ubuntu 14.04
LTS and Ubuntu 16.04 LTS. (CVE-2016-4487, CVE-2016-4488, CVE-2016-4489,
CVE-2016-4490, CVE-2016-4492, CVE-2016-4493, CVE-2016-6131)

It was discovered that gdb incorrectly handled parsing certain binaries. If
a user or automated system were tricked into processing a specially crafted
binary, a remote attacker could use this issue to cause gdb to crash,
resulting in a denial of service. (CVE-2016-4491)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.04:
gdb 7.12.50.20170314-0ubuntu1.1

Ubuntu 16.04 LTS:
gdb 7.11.1-0ubuntu1~16.5

Ubuntu 14.04 LTS:
gdb 7.7.1-0ubuntu5~14.04.3

In general, a standard system update will make all the necessary changes.

References:
https://www.ubuntu.com/usn/usn-3367-1
CVE-2014-8501, CVE-2014-9939, CVE-2016-2226, CVE-2016-4487,
CVE-2016-4488, CVE-2016-4489, CVE-2016-4490, CVE-2016-4491,
CVE-2016-4492, CVE-2016-4493, CVE-2016-6131

Package Information:
https://launchpad.net/ubuntu/+source/gdb/7.12.50.20170314-0ubuntu1.1
https://launchpad.net/ubuntu/+source/gdb/7.11.1-0ubuntu1~16.5
https://launchpad.net/ubuntu/+source/gdb/7.7.1-0ubuntu5~14.04.3


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