CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.2 | $0-$5k | 0.00 |
A vulnerability was found in Red Hat Linux 4.2/5.2/6.0 (Operating System). It has been rated as critical. Affected by this issue is some unknown functionality of the file in.telnetd. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is confidentiality, and availability. CVE summarizes:
Remote attackers can cause a denial of service on Linux in.telnetd telnet daemon through a malformed TERM environmental variable.
The issue has been introduced in 05/19/1997. The weakness was released 08/19/1999 by FIRST with Redhat (Website). The advisory is available at securityfocus.com. This vulnerability is handled as CVE-1999-0740. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.
The vulnerability was handled as a non-public zero-day exploit for at least 822 days. During that time the estimated underground price was around $5k-$25k.
Upgrading eliminates this vulnerability.
Entries connected to this vulnerability are available at 14788 and 14784.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.5VulDB Meta Temp Score: 6.2
VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Denial of serviceCWE: CWE-404
ATT&CK: T1499
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
05/19/1997 🔍08/19/1999 🔍
08/19/1999 🔍
08/19/1999 🔍
06/21/2014 🔍
04/14/2019 🔍
Sources
Vendor: redhat.comAdvisory: securityfocus.com⛔
Researcher: FIRST
Organization: Redhat
Status: Not defined
CVE: CVE-1999-0740 (🔍)
SecurityFocus: 594 - Linux in.telnetd Denial of Service Vulnerability
See also: 🔍
Entry
Created: 06/21/2014 21:20Updated: 04/14/2019 22:20
Changes: 06/21/2014 21:20 (51), 04/14/2019 22:20 (5)
Complete: 🔍
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