Sendmail up to 8.12 Signal race condition

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Sendmail up to 8.12. This vulnerability affects unknown code of the component Signal Handler. Performing a manipulation results in race condition. This vulnerability is identified as CVE-2001-1349. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Sendmail up to 8.12 (Mail Server Software). It has been classified as problematic. This affects some unknown processing of the component Signal Handler. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Sendmail before 8.11.4, and 8.12.0 before 8.12.0.Beta10, allows local users to cause a denial of service and possibly corrupt the heap and gain privileges via race conditions in signal handlers.

The issue has been introduced in 03/01/2000. The weakness was released 05/28/2001 by Michal Zalewski with BindView (Website). The advisory is shared at razor.bindview.com. This vulnerability is uniquely identified as CVE-2001-1349. The exploitability is told to be difficult. An attack has to be approached locally. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 453 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 74091 (Sendmail Unsafe Signal Handling Race Condition Vulnerability).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (6633), SecurityFocus (BID 2794†) and Vulnerability Center (SBV-2793†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.9
VulDB Temp Score: 4.7
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: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
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OpenVAS ID: 11316
OpenVAS Name: Sendmail remote header buffer overflow
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/01/2000 🔍
05/28/2001 +453 days 🔍
05/28/2001 +0 days 🔍
05/28/2001 +0 days 🔍
05/28/2001 +0 days 🔍
11/11/2003 +897 days 🔍
07/04/2014 +3888 days 🔍
09/26/2025 +4102 days 🔍

Sourcesinfo

Advisory: razor.bindview.com
Researcher: Michal Zalewski
Organization: BindView
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2001-1349 (🔍)
GCVE (CVE): GCVE-0-2001-1349
GCVE (VulDB): GCVE-100-16701
X-Force: 6633
SecurityFocus: 2794 - Sendmail Unsafe Signal Handling Race Condition Vulnerability
Vulnerability Center: 2793 - Sendmail < 8.11.4 and 8.12.0 before 8.12.0.Beta10 DoS And Possibly Privilege Elevation, Medium

Entryinfo

Created: 07/04/2014 11:20
Updated: 09/26/2025 07:42
Changes: 07/04/2014 11:20 (61), 07/03/2017 10:38 (6), 09/26/2025 07:42 (20)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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