University of Kansas Lynx up to 2.8.5 Dev8 HTML Tag input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in University of Kansas Lynx. It has been rated as problematic. This impacts an unknown function of the component HTML Tag Handler. The manipulation leads to input validation. This vulnerability is referenced as CVE-2004-1617. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in University of Kansas Lynx (Web Browser). This issue affects an unknown function of the component HTML Tag Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

Lynx, lynx-ssl, and lynx-cur before 2.8.6dev.8 allow remote attackers to cause a denial of service (infinite loop) via a web page or HTML email that contains invalid HTML including (1) a TEXTAREA tag with a large COLS value and (2) a large tag name in an element that is not terminated, as demonstrated by mangleme. NOTE: a followup suggests that the relevant trigger for this issue is the large COLS value.

The weakness was published 10/18/2004 by Michal Zalewski as not defined posting (Bugtraq). It is possible to read the advisory at marc.theaimsgroup.com. The identification of this vulnerability is CVE-2004-1617 since 02/20/2005. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 22618 (Debian DSA-1076-1 : lynx - programming error), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks.

Upgrading to version 2.8.6dev.8 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (17804), Tenable (22618), SecurityFocus (BID 11443†), Secunia (SA20383†) and SecurityTracker (ID 1011809†). Similar entries are available at VDB-22293 and VDB-22294. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22618
Nessus Name: Debian DSA-1076-1 : lynx - programming error
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 56805
OpenVAS Name: Debian Security Advisory DSA 1076-1 (lynx)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Lynx 2.8.6dev.8

Timelineinfo

10/18/2004 🔍
10/18/2004 +0 days 🔍
10/18/2004 +0 days 🔍
10/20/2004 +2 days 🔍
02/20/2005 +123 days 🔍
10/14/2006 +601 days 🔍
04/14/2015 +3104 days 🔍
06/30/2021 +2269 days 🔍

Sourcesinfo

Advisory: marc.theaimsgroup.com
Researcher: Michal Zalewski
Status: Not defined

CVE: CVE-2004-1617 (🔍)
GCVE (CVE): GCVE-0-2004-1617
GCVE (VulDB): GCVE-100-22295
X-Force: 17804
SecurityFocus: 11443 - Lynx Malformed HTML Infinite Loop Denial Of Service Vulnerability
Secunia: 20383
SecurityTracker: 1011809 - Lynx HTML Parsing Errors Let Remote Users Deny Service

See also: 🔍

Entryinfo

Created: 04/14/2015 13:21
Updated: 06/30/2021 10:19
Changes: 04/14/2015 13:21 (63), 06/08/2017 23:47 (9), 06/30/2021 10:19 (3)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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