The default keybindings for wwm in LTSP Display Manager (ldm) 2.2.x before 2.2.7 allow remote attackers to execute arbitrary commands via the KPRETURN keybinding, which launches a terminal window.

An access control vulnerability exists in the Applet Rhino Script Engine component of Oracle's Java Runtime Environment allows an attacker to remotely execute arbitrary code.

Last updated 24 July 2024

A peer (or local user) may cause TCP to use a nominal MSS of as little as 88 (actual MSS of 76 with timestamps). Given that we have a sufficiently prodigious local sender and the peer ACKs quickly enough, it is nevertheless possible to grow the window for such a connection to the point that we will try to send just under 64K at once. This results in a single skb that expands to 861 segments.

In some drivers with TSO support, such an skb will require hundreds of DMA descriptors; a substantial fraction of a TX ring or even more than a full ring. The TX queue selected for the skb may stall and trigger the TX watchdog repeatedly (since the problem skb will be retried after the TX reset).

Upstream patch: http://www.spinics.net/lists/netdev/msg206332.html

References: http://seclists.org/oss-sec/2012/q3/171

Acknowledgements:

Red Hat would like to thank Ben Hutchings of Solarflare (tm) for reporting this issue.

OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) allows remote authenticated users to gain access to a VM in opportunistic circumstances by using the VNC token for a deleted VM that was bound to the same VNC port.

Integer overflow in the GetEXIFProperty function in magick/property.c in ImageMagick before 6.7.6-4 allows remote attackers to cause a denial of service (out-of-bounds read) via a large component count for certain EXIF tags in a JPEG image. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-0259.

Multiple heap-based buffer overflow flaws were found in the XML manifest encryption handling code of OpenOffice.org and LibreOffice:

1) Previously it was not checked if the particular tag was contained within expected parent tag, leading to possibility of child tag handler being able to write its data into different (than expected) parent handler sequence, leading to heap buffer overflow,

2) also a fixed size sequence was allocated to record properties of a particular XML tag, associated with XML element. By duplicating certain tags in XML manifest it was possible to write past the heap-based buffer bounds,

3) yet, the Base64 decoder implementation incorrectly assumed the length of ChecksumAttribute (input buffer) to be evenly divisible by 4, leading into the storage for output (Base64 decoded) buffer to be underallocated, resulting into heap buffer overflow.

A remote attacker could provide a specially-crafted Open Document Text (.odt) file, that when opened would cause OpenOffice.org / LibreOffice to crash or, potentially execute arbitrary code with the privileges of the user running a tool from the suite.

Qemu, as used in Xen 4.0, 4.1 and possibly other products, when emulating certain devices with a virtual console backend, allows local OS guest users to gain privileges via a crafted escape VT100 sequence that triggers the overwrite of a "device model's address space."

Untrusted search path vulnerability in pammotd (aka the MOTD module) in libpam-modules before 1.1.3-2ubuntu2.1 on Ubuntu 11.10, before 1.1.2-2ubuntu8.4 on Ubuntu 11.04, before 1.1.1-4ubuntu2.4 on Ubuntu 10.10, before 1.1.1-2ubuntu5.4 on Ubuntu 10.04 LTS, and before 0.99.7.1-5ubuntu6.5 on Ubuntu 8.04 LTS, when using certain configurations such as "session optional pammotd.so", allows local users to gain privileges by modifying the PATH environment variable to reference a malicious command, as demonstrated via uname.

Common Vulnerabilities and Exposures assigned an identifier CVE-2008-5983 to the following vulnerability:

Untrusted search path vulnerability in the PySysSetArgv API function in Python before 2.6 prepends an empty string to sys.path when the argv[0] argument does not contain a path separator, which might allow local users to execute arbitrary code via a Trojan horse Python file in the current working directory.

References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5983 http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg586010.html http://www.openwall.com/lists/oss-security/2009/01/26/2 http://www.nabble.com/Bug-484305%3A-bicyclerepair%3A-bike.vim-imports-untrusted-python-files-from-cwd-td18848099.html

Unspecified vulnerability in the Server component in Oracle MySQL 5.1.65 and earlier and 5.5.27 and earlier allows remote authenticated users to affect availability, related to GIS Extension.

It was discovered that the formatted printing functionality in glibc did not properly restrict the use of alloca(). A remote attacker could provide a specially crafted sequence of format specifiers, leading to a crash or, potentially, FORTIFYSOURCE format string protection mechanism bypass, when processed.

An XML External Entities (XXE) attack was found in the way xmlparse routine, used for producing of xml data type value from character data, of PostgreSQL, an advanced Object-Relational database management system (DBMS), performed parsing of provided character data. An unprivileged database user could issue a specially-crafted SQL query to the PostgreSQL server that, when processed could lead to attacker's ability to read arbitrary system files, accessible with privileges of the user running the PostgreSQL server.

References: [1] http://www.postgresql.org/docs/8.3/static/release-8-3-20.html [2] http://www.postgresql.org/docs/9.0/static/release-9-0-9.html [3] http://www.postgresql.org/docs/9.1/static/release-9-1-5.html

DistUpgrade/DistUpgradeFetcherCore.py in Update Manager before 1:0.87.31.1, 1:0.134.x before 1:0.134.11.1, 1:0.142.x before 1:0.142.23.1, 1:0.150.x before 1:0.150.5.1, and 1:0.152.x before 1:0.152.25.5 on Ubuntu 8.04 through 11.10 does not verify the GPG signature before extracting an upgrade tarball, which allows man-in-the-middle attackers to (1) create or overwrite arbitrary files via a directory traversal attack using a crafted tar file, or (2) bypass authentication via a crafted meta-release file.

Unspecified vulnerability in the Server component in Oracle MySQL 5.1.66 and earlier and 5.5.28 and earlier allows remote attackers to affect availability via unknown vectors.

It was discovered that the formatted printing functionality in glibc did not properly honor the size of a structure when calculating the amount of memory to allocate. A remote attacker could provide a specially crafted sequence of format specifiers, leading to an undersized buffer allocation and subsequent stack corruption, resulting in a crash or, potentially, FORTIFYSOURCE format string protection mechanism bypass, when processed.

References: http://sourceware.org/bugzilla/showbug.cgi?id=12445 http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=84a4211850e3d23a9d3a4f3b294752a3b30bc0ff

It was discovered that the formatted printing functionality in glibc used extendalloca() incorrectly. A remote attacker could provide a specially crafted sequence of format specifiers, leading to a desynchronization within the buffer size handling, resulting in the use of uninitialized memory or, potentially, FORTIFYSOURCE format string protection mechanism bypass, when processed.

References: http://sourceware.org/bugzilla/showbug.cgi?id=13446 http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=a4647e727a2a52e1259474c13f4b13288938bed4

Last updated 24 July 2024

In NetworkManager 0.9.2.0, when a new wireless network was created with WPA/WPA2 security in AdHoc mode, it created an open/insecure network.

A flaw in how TLS/DTLS, when CBC-mode encryption is used, communicates was reported. This vulnerability can allow for a Man-in-the-Middle attacker to recover plaintext from a TLS/DTLS connection, when CBC-mode encryption is used.

This flaw is in the TLS specification, and not a bug in a specific implementation (as such, it affects nearly all implementations). As such, it affects all TLS and DTLS implementations that are compliant with TLS 1.1 or 1.2, or with DTLS 1.0 or 1.2. It also applies to implementations of SSL 3.0 and TLS 1.0 that incorporate countermeasures to deal with previous padding oracle attacks. All TLS/DTLS ciphersuites that include CBC-mode encryption are potentially vulnerable.

To perform a successful attack, when TLS is used, a large number of TLS sessions are required (target plaintext must be sent repeatedly in the same position in the plaintext stream across the sessions). For DTLS, a successful attack can be carried out in a single session. The attacker must also be located close to the machine being attacked.

Further details are noted in the paper:

http://www.isg.rhul.ac.uk/tls/TLStiming.pdf

Currently Mozilla is working on final NSS fixes:

https://bugzilla.mozilla.org/showbug.cgi?id=822365

External References:

http://www.isg.rhul.ac.uk/tls/

Aptdaemon 0.43 and earlier in Ubuntu 11.04, 11.10, and 12.04 LTS does not authenticate packages when the transaction is not simulated, which allows remote attackers to install arbitrary packages via a man-in-the-middle attack.

The sapiheaderop function in main/SAPI.c in PHP 5.4.0RC2 through 5.4.0 does not properly determine a pointer during checks for %0D sequences (aka carriage return characters), which allows remote attackers to bypass an HTTP response-splitting protection mechanism via a crafted URL, related to improper interaction between the PHP header function and certain browsers, as demonstrated by Internet Explorer and Google Chrome. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1398.

apt 0.8.16, 0.9.7, and possibly other versions does not properly handle InRelease files, which allows man-in-the-middle attackers to modify packages before installation via unknown vectors, possibly related to integrity checking and the use of third-party repositories.

Juliano Rizzo announced: [1] http://www.ekoparty.org/2011/juliano-rizzo.php

that at ekoparty Security Conference, from 2011-09-21 to 2011-09-23 they will present a new fast block-wise chosen-plaintext attack against SSL/TLS. One application of the attack should allow the adversary to efficiently decrypt and obtain authentication tokens and cookies from HTTPS requests.

The Red Hat Security Response Team is watching progress on this one and once further details are available, we will immediately react to ensure timely manner updates for affected packages.

ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate when downloading PPA GPG key fingerprints, which allows man-in-the-middle (MITM) attackers to spoof GPG keys for a package repository.

Unspecified vulnerability in the Server component in Oracle MySQL 5.1.66 and earlier and 5.5.28 and earlier allows remote authenticated users to affect availability via unknown vectors related to Server Optimizer.

The Ubuntu AccountsService package before 0.6.14-1git1ubuntu1.1 does not properly drop privileges when changing language settings, which allows local users to modify arbitrary files via unspecified vectors.

DistUpgrade/DistUpgradeMain.py in Update Manager, as used by Ubuntu 12.04 LTS, 11.10, and 11.04, uses weak permissions for (1) apt-clonesystemstate.tar.gz and (2) systemstate.tar.gz, which allows local users to obtain repository credentials.

debian/guest-account in Light Display Manager (lightdm) 1.0.x before 1.0.6 and 1.1.x before 1.1.7, as used in Ubuntu Linux 11.10, allows local users to delete arbitrary files via a space in the name of a file in /tmp. NOTE: this identifier was SPLIT per ADT1/ADT2 due to different codebases and affected versions. CVE-2012-6648 has been assigned for the gdm-guest-session issue.

DistUpgrade/DistUpgradeViewKDE.py in Update Manager before 1:0.87.31.1, 1:0.134.x before 1:0.134.11.1, 1:0.142.x before 1:0.142.23.1, 1:0.150.x before 1:0.150.5.1, and 1:0.152.x before 1:0.152.25.5 does not properly create temporary files, which allows local users to obtain the XAUTHORITY file content for a user via a symlink attack on the temporary file.