XFree86 up to 4.3.0 ReadFontAlias memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.5$0-$5k0.00

Summaryinfo

A vulnerability was found in XFree86 up to 4.3.0. It has been declared as critical. This issue affects the function ReadFontAlias. The manipulation results in memory corruption. This vulnerability is known as CVE-2004-0083. Access to the local network is required for this attack. Furthermore, an exploit is available. It is recommended to upgrade the affected component. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Detailsinfo

A vulnerability was found in XFree86 up to 4.3.0. It has been classified as critical. Affected is the function ReadFontAlias. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in ReadFontAlias from dirfile.c of XFree86 4.1.0 through 4.3.0 allows local users and remote attackers to execute arbitrary code via a font alias file (font.alias) with a long token, a different vulnerability than CVE-2004-0084 and CVE-2004-0106.

The bug was discovered 02/10/2004. The weakness was published 02/10/2004 by Greg MacManus with iDefense (Website). The advisory is available at idefense.com. This vulnerability is traded as CVE-2004-0083. Access to the local network is required for this attack to succeed. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

After 2 months, there has been an exploit disclosed. The exploit is shared for download at securiteam.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 13824 (SuSE-SA:2004:006: xf86/XFree86), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at ftp.xfree86.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (15130), Exploit-DB (23682), Tenable (13824), SecurityFocus (BID 9636†) and OSVDB (3905†). Further details are available at xfree86.org. Similar entries are available at VDB-1401 and VDB-1402. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.5

VulDB Base Score: 5.0
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 13824
Nessus Name: SuSE-SA:2004:006: xf86/XFree86
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 53680
OpenVAS Name: Debian Security Advisory DSA 443-1 (xfree86)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Patch: ftp.xfree86.org

Timelineinfo

02/10/2004 🔍
02/10/2004 +0 days 🔍
02/10/2004 +0 days 🔍
02/11/2004 +1 days 🔍
02/11/2004 +0 days 🔍
02/12/2004 +0 days 🔍
02/12/2004 +0 days 🔍
03/03/2004 +20 days 🔍
04/01/2004 +29 days 🔍
07/25/2004 +115 days 🔍
12/17/2024 +7450 days 🔍

Sourcesinfo

Advisory: idefense.com⛔
Researcher: Greg MacManus
Organization: iDefense
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2004-0083 (🔍)
GCVE (CVE): GCVE-0-2004-0083
GCVE (VulDB): GCVE-100-510

OVAL: 🔍

CERT: 🔍
X-Force: 15130 - XFree86 font.alias file buffer overflow, High Risk
SecurityFocus: 9636 - XFree86 Font Information File Buffer Overflow Vulnerability
Secunia: 10824 - XFree86 "font.alias" File Parsing Privilege Escalation Vulnerabilities, Less Critical
OSVDB: 3905 - XFree86 dirfile.c ReadFontAlias Function Overflow
SecuriTeam: securiteam.com
Vulnerability Center: 8638

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/12/2004 10:39 AM
Updated: 12/17/2024 03:22 AM
Changes: 02/12/2004 10:39 AM (95), 06/27/2019 05:30 PM (2), 07/09/2024 03:39 PM (17), 12/15/2024 11:45 PM (3), 12/17/2024 03:22 AM (1)
Complete: 🔍
Cache ID: 244:E1E:40

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!