vixie cron on OpenBSD cron/entry.c heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in vixie cron on OpenBSD. This affects an unknown function of the file cron/entry.c. The manipulation leads to heap-based overflow. This vulnerability is referenced as CVE-2024-43688. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as critical, has been found in vixie cron on OpenBSD (the affected version is unknown). This issue affects an unknown code of the file cron/entry.c. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

cron/entry.c in vixie cron before 9cc8ab1, as used in OpenBSD 7.4 and 7.5, allows a heap-based buffer underflow and memory corruption. NOTE: this issue was introduced during a May 2023 refactoring.

It is possible to read the advisory at supernetworks.org. The identification of this vulnerability is CVE-2024-43688 since 08/14/2024. The exploitation is known to be easy. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 9cc8ab1087bb9ab861dd5595c41200683c9f6712 is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.3
CNA Vector (MITRE): 🔍

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 9cc8ab1087bb9ab861dd5595c41200683c9f6712

Timelineinfo

08/14/2024 🔍
08/20/2024 +6 days 🔍
08/20/2024 +0 days 🔍
08/27/2024 +6 days 🔍

Sourcesinfo

Product: github.com

Advisory: supernetworks.org
Status: Confirmed

CVE: CVE-2024-43688 (🔍)
GCVE (CVE): GCVE-0-2024-43688
GCVE (VulDB): GCVE-100-275195

Entryinfo

Created: 08/20/2024 09:01
Updated: 08/27/2024 01:55
Changes: 08/20/2024 09:01 (56), 08/21/2024 10:00 (1), 08/27/2024 01:55 (11)
Complete: 🔍
Cache ID: 216::103

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