Last updated 24 July 2024
Last updated 24 July 2024
A flaw was found in the way pi to pi futex requeueing was handled.
A local unprivileged user can use this flaw to increase their privileges on the system.
A NULL pointer dereference flaw was found in libtasn1's asn1readvaluetype() / asn1readvalue() function. If an application called the function with a NULL value for an ivalue argument to determine the amount of memory needed to store data to be read from the ASN.1 input, libtasn1 could incorrectly attempt to dereference the NULL pointer, causing an application using the library to crash.
The libtasn1 library is used by the GnuTLS library to parse X.509 certificates. The gnutls packages in Red Hat Enterprise Linux 5 and earlier use bundled libtasn1, packages in Red Hat Enterprise Linux 6 and later depend on the library provided by a separate libtasn1 package.
Upstream commits: http://git.savannah.gnu.org/cgit/libtasn1.git/commit/lib/element.c?id=a8b3e14f84174e01755bfd1be5448fffce7c9ffa http://git.savannah.gnu.org/cgit/libtasn1.git/commit/lib/element.c?id=3d6a02f19ff15a38dae9686033e37499b3968256 http://git.savannah.gnu.org/cgit/libtasn1.git/commit/lib/element.c?id=53958290ab731c8486531a3bdef54a933533579d
It was discovered that libtasn1 library function asn1getbitder() could incorrectly report negative bit length of the value read from ASN.1 input. This could possibly lead to an out of bounds access in an application using libtasn1, for example in case if application tried to terminate read value with NUL byte.
The following upstream commit corrects the issue and causes the function to report error rather than return negative length value: http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=1c3ccb3e040bf13e342ee60bc23b21b97b11923f
Multiple buffer boundary check issues were discovered in libtasn1 library, causing it to read beyond the boundary of an allocated buffer. An untrusted ASN.1 input could cause an application using the library to crash.
The libtasn1 library is used by the GnuTLS library to parse X.509 certificates. The gnutls packages in Red Hat Enterprise Linux 5 and earlier use bundled libtasn1, packages in Red Hat Enterprise Linux 6 and later depend on the library provided by a separate libtasn1 package.
Upstream commits: http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=ff3b5c68cc32e30d19edbbc3a962b2266029f3cc http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=0e80d79db71747644394fe3472dad28cd3e7b00b http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=154909136c12cfa5c60732b7210827dfb1ec6aee http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=37a16434131c6ad8745b9accefec5cecb4cbb5b7 http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=cc10a8c5443c751d920cfaca1f104089e43296be http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=6fee6745b1bd1a82f16ae9b607855a3e3ab39fc6 http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=af0e8cd0bacf47ecce049165d3bc1ed9e861df1c http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=609d5c1366fb424f6150c4eed358d246e61cf204 http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=51612fca32dda445056ca9a7533bae258acd3ecb
A flaw was found in the way the Linux kernel's floppy driver handled user space provided data in certain error code paths while processing FDRAWCMD IOCTL commands. A local user with write access to /dev/fdX could use this flaw to free (using the kfree() function) arbitrary kernel memory. (CVE-2014-1737, Important) It was found that the Linux kernel's floppy driver leaked internal kernel memory addresses to user space during the processing of the FDRAWCMD IOCTL command. A local user with write access to /dev/fdX could use this flaw to obtain information about the kernel heap arrangement. (CVE-2014-1738, Low) Note: A local user with write access to /dev/fdX could use these two flaws (CVE-2014-1737 in combination with CVE-2014-1738) to escalate their privileges on the system.
A flaw was found in the way Linux kernel's floppy driver treated userspace provided data in certain error code path while processing FDRAWCMD ioctl command. An local user with write access to /dev/fdX could use this flaw to kfree() arbitrary data. (CVE-2014-1737)
It was found that Linux kernel's floppy driver leaked internal kernel memory addresses to userspace during processing of FDRAWCMD ioctl command. An local user with write access to /dev/fdX could use this flaw to get information about kernel heap arrangment. (CVE-2014-1738)
An local user with write access to /dev/fdX could use these two flaws (CVE-2014-1737 in combination with CVE-2014-1738) to escalate their privileges on the system.
Acknowledgements:
Red Hat would like to thank Matthew Daley for reporting these issues.
A Linux kernel built with a Generic IEEE 802.11 Networking Stack (CONFIGMAC80211) is vulnerable to a crash caused by a race condition in frame transmission path and station wakeup event, in case when it's sleeping. The crash occurs because, mac80211 stack buffers frames when the station is sleeping, and the same are transmitted upon the station's(STA) wakeup. At this point, a buffered TX frame list is being emptied, while a new frame is being added to the RX list.
A remote unprivileged user/program could use this flaw to crash the system kernel, resulting in DoS.
Upstream fix: ------------- -> https://git.kernel.org/linus/1d147bfa64293b2723c4fec50922168658e613ba
Reference: ---------- -> http://seclists.org/oss-sec/2014/q2/7
Multiple directory traversal vulnerabilities in (1) modevhost and (2) modsimplevhost in lighttpd before 1.4.35 allow remote attackers to read arbitrary files via a .. (dot dot) in the host name, related to requestcheckhostname.
SQL injection vulnerability in modmysqlvhost.c in lighttpd before 1.4.35 allows remote attackers to execute arbitrary SQL commands via the host name, related to requestcheckhostname.
Last updated 24 July 2024