Multiple vendors wget/cURL NTLM buffer username buffer overflow
| wget-curl-ntlm-username-bo (22721) |  High Risk |
Description:
Multiple vendors using wget or cURL are vulnerable to a stack-based buffer overflow caused by improper bounds checking with information sent to the memcpy() function. If NT Lan Manager (NTLM) authentication is enabled and sending a long NTLM username, a remote attacker could overflow a buffer and execute arbitrary code on the system with user privileges.
Note: It is also reported that an attacker could exploit this vulnerability by sending a HTTP 302 REDIRECT command to the connecting client.
Platforms Affected:
- Canonical, Ubuntu 4.10
- Canonical, Ubuntu 5.04
- Canonical, Ubuntu 5.10
- cURL, cURL 7.10.6 to 7.14.1
- cURL, cURL 7.13.2
- cURL, libcurl 7.10.6 to 7.14.1
- cURL, libcurl 7.13.2
- Debian, Debian Linux 3.0
- Debian, Debian Linux 3.1
- Gentoo, Linux
- GNU, wget 1.10
- MandrakeSoft, Mandrake Linux 10.1
- MandrakeSoft, Mandrake Linux 10.1 X86_64
- MandrakeSoft, Mandrake Linux 2006
- MandrakeSoft, Mandrake Linux 2006 X86_64
- MandrakeSoft, Mandrake Linux LE2005
- MandrakeSoft, Mandrake Linux LE2005 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft, Mandrake Multi Network Firewall 2.0
- Novell, Linux Desktop 9
- Novell, Open Enterprise Server
- Novell, Open Enterprise Server
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 2.1 WS
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 3 AS
- RedHat, Enterprise Linux 3 ES
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 4 AS
- RedHat, Linux Advanced Workstation 2.1 Itanium
- SuSE, Linux Enterprise Server 9
- SuSE, SuSE Linux 10.0
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux 9.2
- SuSE, SuSE Linux 9.3
Remedy:
For wget:
Upgrade to the latest version of wget (1.10.2 or later), available from the wget Download Web page. See References.
For cURL:
Apply the patch for this vulnerability, as listed in Project cURL Security Advisory dated October 13 2005.
As a workaround, ensure the NTLM support is disabled in wget and cURL.
For Debian GNU/Linux:
Refer to DSA-919-2 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux (curl):
Refer to RHSA-2005:807-6 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux (wget):
Refer to RHSA-2005:812-5 for patch, upgrade, or suggested workaround information. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2005-10-19 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux:
Refer to USN-205-1 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Apply the updates for this vulnerability, as listed in SUSE Security Announcement SUSE-SA:2005:063. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- cURL Web site, cURL and libcurl at http://curl.haxx.se/.
- iDEFENSE Security Advisory 10.13.05, Multiple Vendor wget/curl NTLM Username Buffer Overflow Vulnerability at http://www.idefense.com/application/poi/display?id=322&type=vulnerabilities&flashstatus=true.
- Project cURL Security Advisory, October 13th 2005, libcurl NTLM Buffer Overflow Vulnerability at http://curl.haxx.se/mail/lib-2005-10/0061.html.
- wget Download Web page, Index of /pub/gnu/wget at http://ftp.gnu.org/pub/gnu/wget/.
- ASA-2006-027: curl security update (RHSA-2005-807)
- BID-15102: Multiple Vendor WGet/Curl NTLM Username Buffer Overflow Vulnerability
- BID-15647: RETIRED: Apple Mac OS X Security Update 2005-009 Multiple Vulnerabilities
- CVE-2005-3185: Stack-based buffer overflow in the ntlm_output function in http-ntlm.c for (1) wget 1.10, (2) curl 7.13.2, and (3) libcurl 7.13.2, and other products that use libcurl, when NTLM authentication is enabled, allows remote servers to execute arbitrary code via a long NTLM username.
- DSA-919: curl -- buffer overflow
- GLSA-200510-19: cURL: NTLM username stack overflow
- MDKSA-2005:182: Updated curl packages fix NTLM authentication vulnerability
- MDKSA-2005:183: Updated wget packages fix NTLM authentication vulnerability
- OSVDB ID: 20011: GNU wget NTLM Username ntlm_output() Function Overflow
- RHSA-2005-807: curl security update
- RHSA-2005-812: wget security update
- SA17192: wget NTLM Username Handling Buffer Overflow Vulnerability
- SA17193: cURL/libcURL NTLM Username Handling Buffer Overflow Vulnerability
- SA17813: Mac OS X Security Update Fixes Multiple Vulnerabilities
- SECTRACK ID: 1015056: wget Buffer Overflow in Processing NTLM Authentication Values May Let Remote Users Execute Arbitrary Code
- SECTRACK ID: 1015057: cURL/libcurl Buffer Overflow in Processing NTLM Authentication Values May Let Remote Users Execute Arbitrary Code
- SUSE-SA:2005:063: wget curl: remote code execution
- SUSE-SR:2005:025: SUSE Security Summary Report
- USN-205-1: Curl and wget vulnerabilities
- VUPEN/ADV-2005-2088: cURL NTLM Username Handling Remote Buffer Overflow Vulnerability
- VUPEN/ADV-2005-2659: Apple Security Update Fixes Multiple Mac OS X Vulnerabilities
Reported:
Oct 13, 2005
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