A memory leak was found in the way libpng processed malformed Portable Network Graphics (PNG) images with Physical Scale (sCAL) extension. A remote attacker could create a specially-crafted PNG image and trick the local user into opening it in an application, using the libpng library, leading to denial of service (relevant libpng-based application crash).

References: [1] http://www.libpng.org/pub/png/libpng.html

CVE Request: [2] http://www.openwall.com/lists/oss-security/2010/06/28/2

Description of problem: In bcmconnect() (in net/can/bcm.c), there is the following code:

sprintf(bo->procname, "%p", sock);

"procname" is a 9-byte char array. On 64-bit platforms, up to 17 bytes may be copied into the buffer. Fortunately, structure padding will most likely prevent this from being a problem, except for the trailing NULL byte, which may overwrite the first byte of the next heap object.

Reference: http://www.spinics.net/lists/netdev/msg145791.html

Acknowledgements:

Red Hat would like to thank Dan Rosenberg for reporting this issue.

Common Vulnerabilities and Exposures assigned an identifier CVE-2010-4577 to the following vulnerability:

Name: CVE-2010-4577 Status: Candidate URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4577 Assigned: 20101221 Reference: CONFIRM:http://code.google.com/p/chromium/issues/detail?id=63866 Reference: CONFIRM:http://googlechromereleases.blogspot.com/2010/12/stable-beta-channel-updates13.html

Google Chrome before 8.0.552.224 and Chrome OS before 8.0.552.343 do not properly parse Cascading Style Sheets (CSS) token sequences, which allows remote attackers to cause a denial of service (out-of-bounds read) via unspecified vectors.

Upstream: Bugzilla: https://bugs.webkit.org/showbug.cgi?id=49883 Trac: http://trac.webkit.org/changeset/72685

This is fixed in webkitgtk 1.2.6

Buffer overflow in pngpread.c in libpng before 1.2.44 and 1.4.x before 1.4.3, as used in progressive applications, might allow remote attackers to execute arbitrary code via a PNG image that triggers an additional data row.

Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a certificate with a large number of Subject Alternate Names, which is not properly handled in a realloc operation when importing the certificate or verifying its signature.

MySQL before 5.1.48 allows remote authenticated users with alter database privileges to cause a denial of service (server crash and database loss) via an ALTER DATABASE command with a #mysql50# string followed by a . (dot), .. (dot dot), ../ (dot dot slash) or similar sequence, and an UPGRADE DATA DIRECTORY NAME command, which causes MySQL to move certain directories to the server data directory.

An off by one memory read out of bounds issue exists in WebKit's handling of HTML lists. Visiting a maliciously crafted website may lead to an unexpected application termination or the disclosure of the contents of memory. This issue is addressed through improved bounds checking.

References:

Bugzilla: https://bugs.webkit.org/showbug.cgi?id=39508 Trac: http://trac.webkit.org/changeset/59950

Acknowledgements:

Red Hat would like to thank Drew Yao of Apple Product Security for responsibly reporting this issue.

A use after free issue exists in WebKit's handling of geolocation events. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved handing of geolocation events.

References:

Bugzilla: https://bugs.webkit.org/showbug.cgi?id=39388 Trac: http://trac.webkit.org/changeset/59859

Acknowledgements:

Red Hat would like to thank Drew Yao of Apple Product Security for responsibly reporting this issue. Upstream acknowledges Justin Schuh as the original reporter.

The Mail Fetch plugin in SquirrelMail 1.4.20 and earlier allows remote authenticated users to bypass firewall restrictions and use SquirrelMail as a proxy to scan internal networks via a modified POP3 port number.

Off-by-one error in the convertqueryhexchar function in html.c in cgit.cgi in cgit before 0.8.3.5 allows remote attackers to cause a denial of service (infinite loop) via a string composed of a % (percent) character followed by invalid hex characters, as demonstrated by a %gg sequence.

Tavis Ormandy reported that seunshare, part of policycoreutils, was shipped setuid root and failed to enforce proper permissions on an alternate temporary directory mounted as /tmp. This could potentially lead to privilege escalation in certain privileged applications that assume /tmp to be sticky and root-owned.

Acknowledgements:

Red Hat would like to thank Tavis Ormandy for reporting this issue.

The vsffilenamepassesfilter function in ls.c in vsftpd before 2.3.3 allows remote authenticated users to cause a denial of service (CPU consumption and process slot exhaustion) via crafted glob expressions in STAT commands in multiple FTP sessions, a different vulnerability than CVE-2010-2632.

Stack-based buffer overflow in the asturiencode function in main/utils.c in Asterisk Open Source before 1.4.38.1, 1.4.39.1, 1.6.1.21, 1.6.2.15.1, 1.6.2.16.1, 1.8.1.2, 1.8.2.; and Business Edition before C.3.6.2; when running in pedantic mode allows remote authenticated users to execute arbitrary code via crafted caller ID data in vectors involving the (1) SIP channel driver, (2) URIENCODE dialplan function, or (3) AGI dialplan function.

End of life: 6/24/2011, Latest version: 13