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RHSA-2002_163

Vulnerability from csaf_redhat - Published: 2002-08-08 09:20 - Updated: 2024-11-21 22:26
Summary
Red Hat Security Advisory: openssl, mm security update for Stronghold
Severity
Critical
Notes
Topic: Updated Apache packages are available which fix several serious buffer overflow vulnerabilities in OpenSSL and a local privilege escalation vulnerability in MM.
Details: Note: Please read the "Solution" section below as there are special upgrade instructions for this errata. ----------- OpenSSL is a commercial-grade, full-featured, and Open Source toolkit which implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library. A security audit of the OpenSSL code sponsored by DARPA found several buffer overflows in OpenSSL which affect versions 0.9.7 and 0.9.6d and earlier: 1. The master key supplied by a client to an SSL version 2 server could be oversized, causing a stack-based buffer overflow. This issue is remotely exploitable. Services that have SSLv2 disabled would not be vulnerable to this issue. (CAN-2002-0656) 2. The SSLv3 session ID supplied to a client from a malicious server could be oversized and overrun a buffer. This issue looks to be remotely exploitable. (CAN-2002-0656) 3. Various buffers used for storing ASCII representations of integers were too small on 64 bit platforms. This issue may be exploitable. (CAN-2002-0655) A further issue was found in OpenSSL 0.9.7 that does not affect versions of OpenSSL included in Stronghold (CAN-2002-0657). The MM library provides an abstraction layer which allows related processes to easily share data. On systems where shared memory or other inter-process communication mechanisms are not available, the MM library will emulate them using temporary files. MM is used in Stronghold to providing shared memory pools to Apache modules. Versions of MM up to and including 1.1.3 open temporary files in an unsafe manner, allowing a malicious local user to cause an application which uses MM to overwrite any file to which it has write access. (CAN-2002-0658) All users are advised to upgrade to these errata packages which contain a patched version of MM that is not vulnerable to this issue. Thanks go to the OpenSSL team, Ben Laurie, and Marcus Meissner for providing patches for these issues.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2002-0655

OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, does not properly handle ASCII representations of integers on 64 bit platforms, which could allow attackers to cause a denial of service and possibly execute arbitrary code.

Affected products
Product Identifier Version Remediation
Red Hat Stronghold 4
Red Hat / Stronghold Cross Platform
 cpe:/a:redhat:stronghold:4 —
Vendor Fix fix
Threats
Impact Critical
CVE-2002-0656

Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a large client master key in SSL2 or (2) a large session ID in SSL3.

Affected products
Fixed 1 product, the same list as for CVE-2002-0655
Threats
Impact Critical
CVE-2002-0658

OSSP mm library (libmm) before 1.2.0 allows the local Apache user to gain privileges via temporary files, possibly via a symbolic link attack.

Affected products
Fixed 1 product, the same list as for CVE-2002-0655
Threats
Impact Moderate
CVE-2002-0659

The ASN1 library in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allows remote attackers to cause a denial of service via invalid encodings.

Affected products
Fixed 1 product, the same list as for CVE-2002-0655
Threats
Impact Important
References
To clipboard 

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        "text": "Note:\n\nPlease read the \"Solution\" section below as there are special upgrade\ninstructions for this errata.\n\n-----------\n\nOpenSSL is a commercial-grade, full-featured, and Open Source toolkit which\nimplements the Secure Sockets Layer (SSL v2/v3) and Transport Layer\nSecurity (TLS v1) protocols as well as a full-strength general purpose\ncryptography library. A security audit of the OpenSSL code sponsored by\nDARPA found several buffer overflows in OpenSSL which affect versions 0.9.7\nand 0.9.6d and earlier:\n\n1. The master key supplied by a client to an SSL version 2 server could be\noversized, causing a stack-based buffer overflow. This issue is remotely\nexploitable. Services that have SSLv2 disabled would not be vulnerable to\nthis issue. (CAN-2002-0656)\n\n2. The SSLv3 session ID supplied to a client from a malicious server could\nbe oversized and overrun a buffer. This issue looks to be remotely\nexploitable. (CAN-2002-0656)\n\n3. Various buffers used for storing ASCII representations of integers were\ntoo small on 64 bit platforms. This issue may be exploitable. (CAN-2002-0655)\n\nA further issue was found in OpenSSL 0.9.7 that does not affect versions of\nOpenSSL included in Stronghold (CAN-2002-0657).\n\nThe MM library provides an abstraction layer which allows related processes\nto easily share data. On systems where shared memory or other\ninter-process communication mechanisms are not available, the MM library\nwill emulate them using temporary files. MM is used in Stronghold to\nproviding shared memory pools to Apache modules.\n\nVersions of MM up to and including 1.1.3 open temporary files in an unsafe\nmanner, allowing a malicious local user to cause an application which uses\nMM to overwrite any file to which it has write access. (CAN-2002-0658)\n\nAll users are advised to upgrade to these errata packages which contain a\npatched version of MM that is not vulnerable to this issue.\n\nThanks go to the OpenSSL team, Ben Laurie, and Marcus Meissner for\nproviding patches for these issues.",
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}



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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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