libicu REStackFrames denial of service
| libicu-restackframes-dos (39938) |  Low Risk |
Description:
libicu is vulnerable to a denial of service related to corrupt REStackFrames. By sending a specially-crafted regular expression containing illegal backreference referrals to capture group zero, a local attacker could crash linked applications.
*CVSS:
| Base Score: | 2.1 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | None |
| Temporal Score: | 1.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to the SourceForge.net: Archive for patch, upgrade or suggested workaround information. See References.
For Open Office:
Upgrade to the latest version of Open Office (2.4 or later), available from the Open Office Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- OpenOffice.org Security Bulletin CVE-2007-4770/4771: Manipulated ODF text documents containing XForms can lead to heap overflows and arbitrary code execution.
- OpenOffice.org Web site: download: OpenOffice.org Downloads.
- Red Hat Bugzilla Bug 429023: CVE-2007-4770 libicu poor back reference validation.
- SourceForge.net: Archive: [icu-support] ICU Patch for bugs in Regular Expressions.
- Sun Alert ID: 231641: Security Vulnerability for ODF Text Documents Containing XForms in StarOffice 8/StarSuite 8.
- Sun Alert ID: 233922: Multiple Security Vulnerabilities in ICU 3.2 Library Regular Expression Processing May Cause a Denial of Service (DoS).
- ASA-2008-128: Multiple Security Vulnerabilities in ICU 3.2 Library Regular Expression Processing May Cause a Denial of Service (DoS) (Sun 233922)
- BID-27455: International Components for Unicode Library (libicu) Multiple Memory Corruption Vulnerabilities
- CVE-2007-4770: libicu in International Components for Unicode (ICU) 3.8.1 and earlier attempts to process backreferences to the nonexistent capture group zero (aka \0), which might allow context-dependent attackers to read from, or write to, out-of-bounds memory locations, related to corruption of REStackFrames.
- DSA-1511: libicu -- various
- GLSA-200803-20: International Components for Unicode: Multiple vulnerabilities
- MDVSA-2008:026: Updated icu packages fix vulnerabilities
- RHSA-2008-0090: Important: icu security update
- SA28575: International Components for Unicode Regular Expressions Vulnerabilities
- SA29291: Sun Solaris ICU Regular Expressions Vulnerabilities
- SA29852: OpenOffice Multiple Vulnerabilities
- SA29987: Sun StarOffice/StarSuite Multiple Vulnerabilities
- SECTRACK ID: 1019269: ICU Regular Expression Processing Bug May Let Users Execute Arbitrary Code
- SUSE-SA:2008:023: OpenOffice.org security problems
- SUSE-SR:2008:005: SUSE Security Summary Report
- USN-591-1: libicu vulnerabilities
- VUPEN/ADV-2008-0282: International Components for Unicode Regular Expressions Vulnerabilities
- VUPEN/ADV-2008-0807: Sun Solaris ICU Library Regular Expression Denial of Service Issues
- VUPEN/ADV-2008-1253: OpenOffice.org Data Processing Multiple Code Execution Vulnerabilities
- VUPEN/ADV-2008-1375: Sun StarOffice/StarSuite File Handling Code Execution Vulnerabilities
Platforms Affected:
- Canonical Ubuntu 6.06 LTS
- Canonical Ubuntu 6.10
- Canonical Ubuntu 7.04
- Canonical Ubuntu 7.10
- Debian Debian Linux 4.0
- Gentoo Linux
- ICU International Components for Unicode 3.8.1
- MandrakeSoft Mandrake Linux 2008.0
- MandrakeSoft Mandrake Linux 2008.0 X86_64
- Novell Linux Desktop 9
- Novell OpenSUSE 10.2
- Novell OpenSUSE 10.3
- Novell SLE SDK 10
- Novell SLE SDK 10 SP1
- Novell SUSE Linux Enterprise Desktop 10 SP1
- OpenOffice OpenOffice.org 2.0
- OpenOffice OpenOffice.org 2.1
- OpenOffice OpenOffice.org 2.2
- OpenOffice OpenOffice.org 2.3
- RedHat Enterprise Linux 5 Client Workstation
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 5
- Sun Solaris 10 x86
- Sun Solaris 10 SPARC
- Sun Solaris 9 SPARC
- Sun Solaris 9 x86
- Sun StarOffice 8.0
- Sun StarSuite 8.0
Reported:
Jan 22, 2008
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