Vulnerabilities > CVE-2012-1181 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Apache MOD Fcgid 2.3.6
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
fcgid_spawn_ctl.c in the mod_fcgid module 2.3.6 for the Apache HTTP Server does not recognize the FcgidMaxProcessesPerClass directive for a virtual host, which makes it easier for remote attackers to cause a denial of service (memory consumption) via a series of HTTP requests that triggers a process count higher than the intended limit.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 2 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201207-09.NASL description The remote host is affected by the vulnerability described in GLSA-201207-09 (mod_fcgid: Multiple vulnerabilities) Multiple vulnerabilities have been found in mod_fcgid: An error in the last seen 2020-06-01 modified 2020-06-02 plugin id 59901 published 2012-07-10 reporter This script is Copyright (C) 2012-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/59901 title GLSA-201207-09 : mod_fcgid: Multiple vulnerabilities code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Gentoo Linux Security Advisory GLSA 201207-09. # # The advisory text is Copyright (C) 2001-2016 Gentoo Foundation, Inc. # and licensed under the Creative Commons - Attribution / Share Alike # license. See http://creativecommons.org/licenses/by-sa/3.0/ # include("compat.inc"); if (description) { script_id(59901); script_version("1.7"); script_cvs_date("Date: 2018/07/11 17:09:26"); script_cve_id("CVE-2010-3872", "CVE-2012-1181"); script_bugtraq_id(44900, 52565); script_xref(name:"GLSA", value:"201207-09"); script_name(english:"GLSA-201207-09 : mod_fcgid: Multiple vulnerabilities"); script_summary(english:"Checks for updated package(s) in /var/db/pkg"); script_set_attribute( attribute:"synopsis", value: "The remote Gentoo host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "The remote host is affected by the vulnerability described in GLSA-201207-09 (mod_fcgid: Multiple vulnerabilities) Multiple vulnerabilities have been found in mod_fcgid: An error in the 'fcgid_header_bucket_read()' function in fcgid_bucket.c could cause a stack-based buffer overflow (CVE-2010-3872). An error in the 'is_spawn_allowed() function in fcgid_spawn_ctl.c prevents Apache from recognizing the FcgidMaxProcessesPerClass directive for a virtual host (CVE-2012-1181). Impact : A local attacker could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition. Furthermore, a remote attacker could send specially crafted HTTP requests, possibly resulting in a Denial of Service condition. Workaround : There is no known workaround at this time." ); script_set_attribute( attribute:"see_also", value:"https://security.gentoo.org/glsa/201207-09" ); script_set_attribute( attribute:"solution", value: "All mod_fcgid users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=www-apache/mod_fcgid-2.3.7'" ); script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:mod_fcgid"); script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux"); script_set_attribute(attribute:"patch_publication_date", value:"2012/07/09"); script_set_attribute(attribute:"plugin_publication_date", value:"2012/07/10"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2012-2018 Tenable Network Security, Inc."); script_family(english:"Gentoo Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("qpkg.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo"); if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (qpkg_check(package:"www-apache/mod_fcgid", unaffected:make_list("ge 2.3.7"), vulnerable:make_list("lt 2.3.7"))) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get()); else security_hole(0); exit(0); } else { tested = qpkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "mod_fcgid"); }
NASL family Debian Local Security Checks NASL id DEBIAN_DSA-2436.NASL description It was discovered that the Apache FCGID module, a FastCGI implementation, did not properly enforce the FcgidMaxProcessesPerClass resource limit, rendering this control ineffective and potentially allowing a virtual host to consume excessive resources. last seen 2020-03-17 modified 2012-03-20 plugin id 58393 published 2012-03-20 reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58393 title Debian DSA-2436-1 : libapache2-mod-fcgid - inactive resource limits code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DSA-2436. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(58393); script_version("1.7"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2012-1181"); script_xref(name:"DSA", value:"2436"); script_name(english:"Debian DSA-2436-1 : libapache2-mod-fcgid - inactive resource limits"); script_summary(english:"Checks dpkg output for the updated package"); script_set_attribute( attribute:"synopsis", value:"The remote Debian host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "It was discovered that the Apache FCGID module, a FastCGI implementation, did not properly enforce the FcgidMaxProcessesPerClass resource limit, rendering this control ineffective and potentially allowing a virtual host to consume excessive resources." ); script_set_attribute( attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615814" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/squeeze/libapache2-mod-fcgid" ); script_set_attribute( attribute:"see_also", value:"https://www.debian.org/security/2012/dsa-2436" ); script_set_attribute( attribute:"solution", value: "Upgrade the libapache2-mod-fcgid packages. For the stable distribution (squeeze), this problem has been fixed in version 1:2.3.6-1+squeeze1." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libapache2-mod-fcgid"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0"); script_set_attribute(attribute:"patch_publication_date", value:"2012/03/19"); script_set_attribute(attribute:"plugin_publication_date", value:"2012/03/20"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Debian Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("debian_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian"); if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (deb_check(release:"6.0", prefix:"libapache2-mod-fcgid", reference:"1:2.3.6-1+squeeze1")) flag++; if (deb_check(release:"6.0", prefix:"libapache2-mod-fcgid-dbg", reference:"1:2.3.6-1+squeeze1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get()); else security_warning(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615814
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615814
- http://www.debian.org/security/2012/dsa-2436
- http://www.debian.org/security/2012/dsa-2436
- http://www.openwall.com/lists/oss-security/2012/03/15/10
- http://www.openwall.com/lists/oss-security/2012/03/15/10
- http://www.openwall.com/lists/oss-security/2012/03/16/2
- http://www.openwall.com/lists/oss-security/2012/03/16/2
- http://www.securityfocus.com/bid/52565
- http://www.securityfocus.com/bid/52565
- https://exchange.xforce.ibmcloud.com/vulnerabilities/74181
- https://exchange.xforce.ibmcloud.com/vulnerabilities/74181
- https://issues.apache.org/bugzilla/show_bug.cgi?id=49902
- https://issues.apache.org/bugzilla/show_bug.cgi?id=49902