Debian alert: New Linux 2.4.16 packages fix several local root exploits (arm)

Posted by dave on Feb 18, 2004 5:33 AM EDT
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Several local root exploits have been discovered recently in the Linux kernel. This security advisory updates the PowerPC/Apus kernel for Debian GNU/Linux. The Common Vulnerabilities and Exposures project identifies the following problems that are fixed with this update:

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- -------------------------------------------------------------------------- Debian Security Advisory DSA 439-1 [e-mail:security@debian.org] http://www.debian.org/security/ Martin Schulze February 18th, 2004 http://www.debian.org/security/faq - --------------------------------------------------------------------------

Package : kernel-image-2.4.16-lart, kernel-image-2.4.16-netwinder, kernel-image-2.4.16-riscpc, kernel-patch-2.4.16-arm Vulnerability : several vulnerabilities Problem-Type : local Debian-specific: no CVE ID : CAN-2003-0961 CAN-2003-0985 CAN-2004-0077

Several local root exploits have been discovered recently in the Linux kernel. This security advisory updates the PowerPC/Apus kernel for Debian GNU/Linux. The Common Vulnerabilities and Exposures project identifies the following problems that are fixed with this update:

CAN-2003-0961:

An integer overflow in brk() system call (do_brk() function) for Linux allows a local attacker to gain root privileges. Fixed upstream in Linux 2.4.23.

CAN-2003-0985:

Paul Starzetz discovered a flaw in bounds checking in mremap() in the Linux kernel (present in version 2.4.x and 2.6.x) which may allow a local attacker to gain root privileges. Version 2.2 is not affected by this bug. Fixed upstream in Linux 2.4.24.

CAN-2004-0077:

Paul Starzetz and Wojciech Purczynski of isec.pl discovered a critical security vulnerability in the memory management code of Linux inside the mremap(2) system call. Due to missing function return value check of internal functions a local attacker can gain root privileges. Fixed upstream in Linux 2.4.25 and 2.6.3.

For the stable distribution (woody) this problem has been fixed in version 2.4.26/20040204 of lart, netwinder and riscpc image and in version 20040204 of kernel-patch-2.4.16-arm.

Other architectures will probably mentioned in a separate advisory or are not affected (m68k).

For the unstable distribution (sid) these problems will be fixed soon.

We recommend that you upgrade your Linux kernel packages immediately.

Upgrade Instructions - --------------------

wget url will fetch the file for you dpkg -i file.deb will install the referenced file.

If you are using the apt-get package manager, use the line for sources.list as given below:

apt-get update will update the internal database apt-get upgrade will install corrected packages

You may use an automated update by adding the resources from the footer to the proper configuration.

Debian GNU/Linux 3.0 alias woody - --------------------------------

Source archives:

http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.16-arm/kernel-patch-2.4.16-arm_20040204.dsc Size/MD5 checksum: 562 7bd0b443e490132da8f26188ca560f75 http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.16-arm/kernel-patch-2.4.16-arm_20040204.tar.gz Size/MD5 checksum: 579045 853b5f05e03217dfb47f28cf852dca4c

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-lart/kernel-image-2.4.16-lart_20040204.dsc Size/MD5 checksum: 586 e2cb96946739cfffd4327ae1e218a982 http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-lart/kernel-image-2.4.16-lart_20040204.tar.gz Size/MD5 checksum: 16443 9b5b8c8311cc6ba23abc2e121882281a

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-netwinder/kernel-image-2.4.16-netwinder_20040204.dsc Size/MD5 checksum: 624 d2258e373574684da142a45ecfc4312f http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-netwinder/kernel-image-2.4.16-netwinder_20040204.tar.gz Size/MD5 checksum: 21783 fc07fb8db829045ef9a8ee6881e1af48

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-riscpc/kernel-image-2.4.16-riscpc_20040204.dsc Size/MD5 checksum: 592 f2252946f185d1c52796a68a1d442cb0 http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-riscpc/kernel-image-2.4.16-riscpc_20040204.tar.gz Size/MD5 checksum: 19104 144bfd5b87a5daccf879049334b24bcd

Architecture independent components:

http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.16-arm/kernel-patch-2.4.16-arm_20040204_all.deb Size/MD5 checksum: 583148 6a4951879008cc3d882d6a30112d0cbc

ARM architecture:

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-lart/kernel-image-2.4.16-lart_20040204_arm.deb Size/MD5 checksum: 717092 eb20d52fed79cfe95981f1838bc38e0c

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-netwinder/kernel-headers-2.4.16_20040204_arm.deb Size/MD5 checksum: 3421140 3e0dfbdcb48437ab733d43c92deb0157 http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-netwinder/kernel-image-2.4.16-netwinder_20040204_arm.deb Size/MD5 checksum: 6671136 72f1f771e847c593e83179b6dbda4074

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.16-riscpc/kernel-image-2.4.16-riscpc_20040204_arm.deb Size/MD5 checksum: 2910348 c4fab31d10a137738aeb722eb7358488

These files will probably be moved into the stable distribution on its next revision.

- --------------------------------------------------------------------------------- For apt-get: deb http://security.debian.org/ stable/updates main For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main Mailing list: [e-mail:debian-security-announce@lists.debian.org] Package info: 'apt-cache show ' and http://packages.debian.org/

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