Linux ptrace race condition allows a local attacker to gain root privileges
| linux-ptrace-race-condition (7311) |  High Risk |
Description:
The ptrace program in some Linux distributions is vulnerable to a race condition that could allow a local attacker to gain root privileges. If ptrace is running in the background and a setuid root binary program (such as newgrp which executes a shell) is executed, a local attacker can execute arbitrary code on the system to gain root privileges.
Consequences:
Gain Privileges
Remedy:
For Caldera OpenLinux 2.3:
Upgrade to the latest Linux kernel package (2.2.10-13 or later), as listed in Caldera International, Inc. Security Advisory CSSA-2001-036.0. See References.
For Caldera OpenLinux eServer 2.3.1 and eBuilder:
Upgrade to the latest Linux kernel package (2.2.14-12S or later), as listed in Caldera International, Inc. Security Advisory CSSA-2001-036.0. See References.
For Caldera OpenLinux eDesktop 2.4:
Upgrade to the latest Linux kernel package (2.2.14-8 or later), as listed in Caldera International, Inc. Security Advisory CSSA-2001-036.0. See References.
For Caldera OpenLinux Server 3.1:
Upgrade to the latest Linux kernel package (2.4.2-13S or later), as listed in Caldera International, Inc. Security Advisory CSSA-2001-036.0. See References.
For Caldera OpenLinux Workstation 3.1:
Upgrade to the latest Linux kernel package (2.4.2-13D or later), as listed in Caldera International, Inc. Security Advisory CSSA-2001-036.0. See References.
For Trustix Secure Linux 1.01, 1.1, 1.2, and 1.5:
Upgrade to the latest Linux kernel package (2.2.19-6tr or later), as listed in Trustix Secure Linux Security Advisory #2001-0028. See References.
For EnGarde Secure Linux 1.0.1:
Upgrade to the latest Linux kernel package (2.2.19-1.0.20 or later), as listed in EnGarde Secure Linux Security Advisory ESA-20011019-02. See References.
For Immunix OS 7.0:
Upgrade to the latest Linux kernel package (2.2.19-8_imnx or later), as listed in Immunix OS Security Advisory IMNX-2001-70-035-01. See References.
For Red Hat Linux 7.1:
Upgrade to the Linux kernel package (2.4.9-6 or later), as listed in RHSA-2001:129-05. See References.For Conectiva Linux 5.0, prg graficos, ecommerce, 5.1, 6.0, and 7.0:
Upgrade to the latest Linux kernel package (2.2.19 or later), as listed in Conectiva Linux Security Annoucement CLA-2001:432. See References.
For SuSE Linux 6.3, 6.4, 7.0, 7.1, 7.2, and 7.3:
Upgrade to the appropriate Linux kernel package, by following the instructions listed in SuSE Security Announcement SuSE-SA:2001:036. See References.
For systems running HP Secure OS software for Linux Release 1.0:
Apply the appropriate patch for your system, as listed in Hewlett-Packard Company Security Bulletin HPSBTL0112-003. See References.
For Mandrake Linux 7.1, 7.2, 8.0, 8.1, Corporate Server 1.0.1, and Single Network Firewall 7.2:
Upgrade to the latest Linux kernel package (2.2.19 or later), as listed in MandrakeSoft Security Advisory MDKSA-2001:082-1 : kernel. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- BugTraq Mailing List, Thu Oct 18 2001 - 12:35:40 CDT: Flaws in recent Linux kernels.
- Caldera International, Inc. Security Advisory CSSA-2001-036.0: Linux - several linux kernel security problems.
- Conectiva Linux Announcement CLSA-2001:432: kernel.
- EnGarde Secure Linux Security Advisory ESA-20011019-02: kernel.
- Hewlett-Packard Company Security Bulletin HPSBTL0112-003: Security vulnerabilities in the kernel. (From SecurityFocus archive.)
- Immunix OS Security Advisory IMNX-2001-70-035-01: kernel-2.2.19.
- SuSE Security Announcement SuSE-SA:2001:036: kernel.
- Trustix Secure Linux Security Advisory TSLSA-2001-0028: kernel.
- BID-3447: Linux Ptrace/Setuid Exec Vulnerability
- BID-5466: HP Secure OS For Linux PTrace / IOCTL Unauthorized Process Access Vulnerability
- CVE-2001-1384: ptrace in Linux 2.2.x through 2.2.19, and 2.4.x through 2.4.9, allows local users to gain root privileges by running ptrace on a setuid or setgid program that itself calls an unprivileged program, such as newgrp.
- MDKSA-2001:079: Disable devfs due to local root compromise
- MDKSA-2001:079-1: Updated kernel 2.4 packages fix multiple insecurities
- MDKSA-2001:079-2: Updated kernel 2.4 packages fix multiple insecurities
- MDKSA-2001:082: Updated kernel 2.2 packages fix two local vulnerabilities
- MDKSA-2001:082-1: Updated kernel 2.2 packages fix additional remote vulnerability
- RHSA-2001-129: New kernel 2.4 packages are available
- RHSA-2001-129-7.2: New kernel 2.4 packages are available for Red Hat 7.2
- RHSA-2001-130: New kernel 2.2 packages are available
Platforms Affected:
- Conectiva Linux 5.0
- Conectiva Linux 5.1
- Conectiva Linux 6.0
- Conectiva Linux 7.0
- Conectiva Linux ecommerce
- Conectiva Linux prg_graficos
- HP Secure OS 1.0
- Immunix Immunix OS 6.2
- Immunix Immunix OS 7.0
- Linux Kernel 2.2.0
- Linux Kernel 2.2.1
- Linux Kernel 2.2.10
- Linux Kernel 2.2.11
- Linux Kernel 2.2.12
- Linux Kernel 2.2.13
- Linux Kernel 2.2.14
- Linux Kernel 2.2.15
- Linux Kernel 2.2.16
- Linux Kernel 2.2.18
- Linux Kernel 2.2.19
- Linux Kernel 2.2.2
- Linux Kernel 2.2.3
- Linux Kernel 2.2.4
- Linux Kernel 2.2.5
- Linux Kernel 2.2.6
- Linux Kernel 2.2.7
- Linux Kernel 2.2.8
- Linux Kernel 2.2.9
- Linux Kernel 2.4.10
- Linux Kernel 2.4.2
- Linux Kernel 2.4.3
- Linux Kernel 2.4.7
- Linux Kernel 2.4.8
- Linux Kernel 2.4.9
- Linux Linux Kernel 2.2.17
- MandrakeSoft Mandrake Linux 7.1
- MandrakeSoft Mandrake Linux 7.2
- MandrakeSoft Mandrake Linux 8.0
- MandrakeSoft Mandrake Linux 8.1
- MandrakeSoft Mandrake Linux Corporate Server 1.0.1
- MandrakeSoft Mandrake Single Network Firewall 7.2
- RedHat Linux 6.2
- RedHat Linux 7
- RedHat Linux 7.1
- RedHat Linux 7.2
- RedHat Linux 7.3
- SCO Caldera OpenLinux 2.3
- SCO Caldera OpenLinux eBuilder
- SCO Caldera OpenLinux eDesktop 2.4
- SCO Caldera OpenLinux eServer 2.3.1
- SCO Caldera OpenLinux Server 3.1
- SCO Caldera OpenLinux Workstation 3.1
- SUSE SuSE Linux 6.3
- SUSE SuSE Linux 6.4
- SUSE SuSE Linux 7.0
- SUSE SuSE Linux 7.1
- SUSE SuSE Linux 7.2
- SUSE SuSE Linux 7.3
- Trustix Secure Linux 1.01
- Trustix Secure Linux 1.1
- Trustix Secure Linux 1.2
- Trustix Secure Linux 1.5
Reported:
Oct 18, 2001
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