Vulnerabilities > CVE-2006-6406 - Unspecified vulnerability in Clam Anti-Virus Clamav 0.88.6
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN clam-anti-virus
nessus
Summary
Clam AntiVirus (ClamAV) 0.88.6 allows remote attackers to bypass virus detection by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 1 |
Nessus
NASL family Debian Local Security Checks NASL id DEBIAN_DSA-1238.NASL description Several remote vulnerabilities have been discovered in the Clam anti-virus toolkit. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2006-6406 Hendrik Weimer discovered that invalid characters in base64 encoded data may lead to bypass of scanning mechanisms. - CVE-2006-6481 Hendrik Weimer discovered that deeply nested multipart/mime MIME data may lead to denial of service. last seen 2020-06-01 modified 2020-06-02 plugin id 23912 published 2006-12-18 reporter This script is Copyright (C) 2006-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/23912 title Debian DSA-1238-1 : clamav - several vulnerabilities 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-1238. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(23912); script_version("1.17"); script_cvs_date("Date: 2019/08/02 13:32:20"); script_cve_id("CVE-2006-6406", "CVE-2006-6481"); script_xref(name:"DSA", value:"1238"); script_name(english:"Debian DSA-1238-1 : clamav - several vulnerabilities"); 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: "Several remote vulnerabilities have been discovered in the Clam anti-virus toolkit. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2006-6406 Hendrik Weimer discovered that invalid characters in base64 encoded data may lead to bypass of scanning mechanisms. - CVE-2006-6481 Hendrik Weimer discovered that deeply nested multipart/mime MIME data may lead to denial of service." ); script_set_attribute( attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2006-6406" ); script_set_attribute( attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2006-6481" ); script_set_attribute( attribute:"see_also", value:"http://www.debian.org/security/2006/dsa-1238" ); script_set_attribute( attribute:"solution", value: "Upgrade the clamav packages. For the stable distribution (sarge) these problems have been fixed in version 0.84-2.sarge.13. For the upcoming stable distribution (etch) these problems have been fixed in version 0.88.7-1." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.1"); script_set_attribute(attribute:"patch_publication_date", value:"2006/12/17"); script_set_attribute(attribute:"plugin_publication_date", value:"2006/12/18"); script_set_attribute(attribute:"vuln_publication_date", value:"2006/12/07"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc."); 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:"3.1", prefix:"clamav", reference:"0.84-2.sarge.13")) flag++; if (deb_check(release:"3.1", prefix:"clamav-base", reference:"0.84-2.sarge.13")) flag++; if (deb_check(release:"3.1", prefix:"clamav-daemon", reference:"0.84-2.sarge.13")) flag++; if (deb_check(release:"3.1", prefix:"clamav-docs", reference:"0.84-2.sarge.13")) flag++; if (deb_check(release:"3.1", prefix:"clamav-freshclam", reference:"0.84-2.sarge.13")) flag++; if (deb_check(release:"3.1", prefix:"clamav-milter", reference:"0.84-2.sarge.13")) flag++; if (deb_check(release:"3.1", prefix:"clamav-testfiles", reference:"0.84-2.sarge.13")) flag++; if (deb_check(release:"3.1", prefix:"libclamav-dev", reference:"0.84-2.sarge.13")) flag++; if (deb_check(release:"3.1", prefix:"libclamav1", reference:"0.84-2.sarge.13")) 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");
NASL family SuSE Local Security Checks NASL id SUSE_SA_2006_078.NASL description The remote host is missing the patch for the advisory SUSE-SA:2006:078 (clamav). The anti virus scan engine ClamAV has been updated to version 0.88.7 to fix various security problems: CVE-2006-5874: Clam AntiVirus (ClamAV) allows remote attackers to cause a denial of service (crash) via a malformed base64-encoded MIME attachment that triggers a NULL pointer dereference. CVE-2006-6481: Clam AntiVirus (ClamAV) 0.88.6 allowed remote attackers to cause a denial of service (stack overflow and application crash) by wrapping many layers of multipart/mixed content around a document, a different vulnerability than CVE-2006-5874 and CVE-2006-6406. CVE-2006-6406: Clam AntiVirus (ClamAV) 0.88.6 allowed remote attackers to bypass virus detection by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file. last seen 2019-10-28 modified 2007-02-18 plugin id 24453 published 2007-02-18 reporter This script is Copyright (C) 2007-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/24453 title SUSE-SA:2006:078: clamav NASL family SuSE Local Security Checks NASL id SUSE_CLAMAV-2391.NASL description This update to ClamAV version 0.88.7 fixes various bugs : CVE-2006-5874: Clam AntiVirus (ClamAV) allows remote attackers to cause a denial of service (crash) via a malformed base64-encoded MIME attachment that triggers a NULL pointer dereference. CVE-2006-6481: Clam AntiVirus (ClamAV) 0.88.6 allowed remote attackers to cause a denial of service (stack overflow and application crash) by wrapping many layers of multipart/mixed content around a document, a different vulnerability than CVE-2006-5874 and CVE-2006-6406. CVE-2006-6406: Clam AntiVirus (ClamAV) 0.88.6 allowed remote attackers to bypass virus detection by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file. last seen 2020-06-01 modified 2020-06-02 plugin id 27177 published 2007-10-17 reporter This script is Copyright (C) 2007-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/27177 title openSUSE 10 Security Update : clamav (clamav-2391) NASL family Mandriva Local Security Checks NASL id MANDRAKE_MDKSA-2006-230.NASL description The latest version of ClamAV, 0.88.7, fixes some bugs, including vulnerabilities with handling base64-encoded MIME attachment files that can lead to either a) a crash (CVE-2006-5874), or b) a bypass of virus detection (CVE-2006-6406). As well, a vulnerability was discovered that allows remote attackers to cause a stack overflow and application crash by wrapping many layers of multipart/mixed content around a document (CVE-2006-6481). The latest ClamAV is being provided to address these issues. last seen 2020-06-01 modified 2020-06-02 plugin id 24613 published 2007-02-18 reporter This script is Copyright (C) 2007-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/24613 title Mandrake Linux Security Advisory : clamav (MDKSA-2006:230) NASL family SuSE Local Security Checks NASL id SUSE_CLAMAV-2390.NASL description This update to ClamAV version 0.88.7 fixes various bugs : - Clam AntiVirus (ClamAV) allows remote attackers to cause a denial of service (crash) via a malformed base64-encoded MIME attachment that triggers a NULL pointer dereference. (CVE-2006-5874) - Clam AntiVirus (ClamAV) 0.88.6 allowed remote attackers to cause a denial of service (stack overflow and application crash) by wrapping many layers of multipart/mixed content around a document, a different vulnerability than CVE-2006-5874 / CVE-2006-6406. (CVE-2006-6481) - Clam AntiVirus (ClamAV) 0.88.6 allowed remote attackers to bypass virus detection by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file. (CVE-2006-6406) last seen 2020-06-01 modified 2020-06-02 plugin id 29397 published 2007-12-13 reporter This script is Copyright (C) 2007-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/29397 title SuSE 10 Security Update : clamav (ZYPP Patch Number 2390)
References
- http://www.quantenblog.net/security/virus-scanner-bypass
- http://www.securityfocus.com/bid/21461
- http://secunia.com/advisories/23362
- http://kolab.org/security/kolab-vendor-notice-14.txt
- http://www.debian.org/security/2006/dsa-1238
- http://www.novell.com/linux/security/advisories/2006_78_clamav.html
- http://secunia.com/advisories/23460
- http://secunia.com/advisories/23379
- http://secunia.com/advisories/23411
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:230
- http://www.vupen.com/english/advisories/2006/4948
- http://www.vupen.com/english/advisories/2006/5113
- http://www.securityfocus.com/archive/1/453654/100/0/threaded