Title: Yukihiro Matsumoto Ruby SAFE Level Restriction Bypass Vulnerability
Severity: MODERATE
Description:
Ruby is an object-oriented scripting language with support for SAFE level checking. This allows programmers to define the level of security checks to be performed when executing certain actions.
Ruby is susceptible to a SAFE level restriction-bypass vulnerability. This issue is due to a flaw in the logic that implements the SAFE level checks.
Specifically, when executing with the SAFE level set to 1, objects that are 'tainted' are not allowed to be executed. Because of this flaw, however, attackers may cause such objects to execute.
This issue allows attackers to bypass the expected SAFE level restrictions, possibly allowing them to execute unauthorized script code in the context of affected applications.
The specific impact of this issue depends on the implementation of scripts that use SAFE level security checks.
Ruby versions prior to 1.8.3 are vulnerable to this issue.
Affected Products:
- Conectiva Linux 10.0.0
- Debian Linux 3.0.0
- Debian Linux 3.0.0 alpha
- Debian Linux 3.0.0 arm
- Debian Linux 3.0.0 hppa
- Debian Linux 3.0.0 ia-32
- Debian Linux 3.0.0 ia-64
- Debian Linux 3.0.0 m68k
- Debian Linux 3.0.0 mips
- Debian Linux 3.0.0 mipsel
- Debian Linux 3.0.0 ppc
- Debian Linux 3.0.0 s/390
- Debian Linux 3.0.0 sparc
- Debian Linux 3.1.0
- Debian Linux 3.1.0 alpha
- Debian Linux 3.1.0 amd64
- Debian Linux 3.1.0 arm
- Debian Linux 3.1.0 hppa
- Debian Linux 3.1.0 ia-32
- Debian Linux 3.1.0 ia-64
- Debian Linux 3.1.0 m68k
- Debian Linux 3.1.0 mips
- Debian Linux 3.1.0 mipsel
- Debian Linux 3.1.0 ppc
- Debian Linux 3.1.0 s/390
- Debian Linux 3.1.0 sparc
- Gentoo Linux
- Linux kernel 2.4.19
- Linux kernel 2.4.21
- Linux kernel 2.6.5
- MandrakeSoft Corporate Server 2.1.0
- MandrakeSoft Corporate Server 2.1.0 x86_64
- MandrakeSoft Corporate Server 3.0.0
- MandrakeSoft Corporate Server 3.0.0 x86_64
- MandrakeSoft Linux Mandrake 10.1.0
- MandrakeSoft Linux Mandrake 10.1.0 x86_64
- MandrakeSoft Linux Mandrake 10.2.0
- MandrakeSoft Linux Mandrake 10.2.0 x86_64
- MandrakeSoft Linux Mandrake 2006.0.0
- MandrakeSoft Linux Mandrake 2006.0.0 x86_64
- RedHat Desktop 3.0.0
- RedHat Desktop 4.0.0
- RedHat Enterprise Linux AS 2.1
- RedHat Enterprise Linux AS 2.1 IA64
- RedHat Enterprise Linux AS 3
- RedHat Enterprise Linux AS 4
- RedHat Enterprise Linux ES 2.1
- RedHat Enterprise Linux ES 2.1 IA64
- RedHat Enterprise Linux ES 3
- RedHat Enterprise Linux ES 4
- RedHat Enterprise Linux WS 2.1
- RedHat Enterprise Linux WS 2.1 IA64
- RedHat Enterprise Linux WS 3
- RedHat Enterprise Linux WS 4
- RedHat Fedora Core2
- RedHat Fedora Core3
- RedHat Fedora Core4
- S.u.S.E. Linux Desktop 1.0.0
- S.u.S.E. Linux Enterprise Server 8
- S.u.S.E. Linux Enterprise Server 9
- S.u.S.E. Linux Personal 10.0.0 OSS
- S.u.S.E. Linux Personal 8.2.0
- S.u.S.E. Linux Personal 9.0.0
- S.u.S.E. Linux Personal 9.0.0 x86_64
- S.u.S.E. Linux Personal 9.1.0
- S.u.S.E. Linux Personal 9.1.0 x86_64
- S.u.S.E. Linux Personal 9.2.0
- S.u.S.E. Linux Personal 9.2.0 x86_64
- S.u.S.E. Linux Personal 9.3.0
- S.u.S.E. Linux Personal 9.3.0 x86_64
- S.u.S.E. Linux Professional 10.0.0 OSS
- S.u.S.E. Linux Professional 8.2.0
- S.u.S.E. Linux Professional 9.0.0
- S.u.S.E. Linux Professional 9.0.0 x86_64
- S.u.S.E. Linux Professional 9.1.0
- S.u.S.E. Linux Professional 9.1.0 x86_64
- S.u.S.E. Linux Professional 9.2.0
- S.u.S.E. Linux Professional 9.2.0 x86_64
- S.u.S.E. Linux Professional 9.3.0
- S.u.S.E. Linux Professional 9.3.0 x86_64
- S.u.S.E. Novell Linux Desktop 9.0.0
- S.u.S.E. Open-Enterprise-Server 9.0.0
- S.u.S.E. SUSE LINUX Retail Solution 8.0.0
- S.u.S.E. SuSE Linux Openexchange Server 4.0.0
- S.u.S.E. SuSE Linux School Server for i386
- S.u.S.E. SuSE Linux Standard Server 8.0.0
- SGI Advanced Linux Environment 3.0.0
- Ubuntu Ubuntu Linux 4.1.0 ia32
- Ubuntu Ubuntu Linux 4.1.0 ia64
- Ubuntu Ubuntu Linux 4.1.0 ppc
- Ubuntu Ubuntu Linux 5.0.0 4 amd64
- Ubuntu Ubuntu Linux 5.0.0 4 i386
- Ubuntu Ubuntu Linux 5.0.0 4 powerpc
- Yukihiro Matsumoto Ruby 1.6.0
- Yukihiro Matsumoto Ruby 1.6.7
- Yukihiro Matsumoto Ruby 1.6.8
- Yukihiro Matsumoto Ruby 1.8.0
- Yukihiro Matsumoto Ruby 1.8.1
- Yukihiro Matsumoto Ruby 1.8.2
- Yukihiro Matsumoto Ruby 1.8.2 pre1
- Yukihiro Matsumoto Ruby 1.8.2 pre2
- Yukihiro Matsumoto Ruby 1.8.2 pre3
References:
- RedHat: RHSA-2005:799-3 - ruby security update
- RedHat: RHSA-2005:799-6 - ruby security update
- Yukihiro Matsumoto: Ruby Homepage
- sheepman <sheepman@sheepman.sakura.ne.jp>: [ruby-dev:27136] prohibit calling tainted method
Juniper Networks provides this content via a wide variety of sources and production methods. If notified of errors or omissions in the content of this page, Juniper Networks, at its discretion, will modify or remove the page or leave the content as is, depending on various factors including but not limited to the reputation and authority of the party providing the notification. Please use the contact information displayed elsewhere on this page to report any errors or omissions regarding the content on this page.
