KTH Kerberos 4 UDP Packet information disclosure

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

Summaryinfo

A vulnerability, which was classified as problematic, has been found in KTH Kerberos 4. Impacted is an unknown function of the component UDP Packet Handler. This manipulation causes information disclosure. This vulnerability is tracked as CVE-1999-1099. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in KTH Kerberos 4. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component UDP Packet Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

kerberos 4 allows remote attackers to obtain sensitive information via a malformed udp packet that generates an error string that inadvertently includes the realm name and the last user.

The weakness was disclosed 11/22/1996 as not defined posting (Bugtraq). The advisory is shared at marc.theaimsgroup.com. This vulnerability is known as CVE-1999-1099. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (65) and Vulnerability Center (SBV-638†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

11/22/1996 🔍
11/22/1996 +0 days 🔍
11/22/1996 +0 days 🔍
01/05/2003 +2235 days 🔍
06/17/2014 +4181 days 🔍
04/16/2026 +4321 days 🔍

Sourcesinfo

Advisory: marc.theaimsgroup.com
Status: Confirmed

CVE: CVE-1999-1099 (🔍)
GCVE (CVE): GCVE-0-1999-1099
GCVE (VulDB): GCVE-100-13777
X-Force: 65
Vulnerability Center: 638 - Kerberos 4 User Information Leakage via Malformed UDP Packets, Low

Entryinfo

Created: 06/17/2014 17:41
Updated: 04/16/2026 11:10
Changes: 06/17/2014 17:41 (40), 05/08/2019 00:13 (16), 04/16/2026 11:10 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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