Sudo up to 1.9.12 passwd.c crypt heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Sudo up to 1.9.12. It has been classified as critical. Affected by this vulnerability is the function crypt of the file plugins/sudoers/auth/passwd.c. The manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2022-43995. The attack can be initiated remotely. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Sudo up to 1.9.12 (Operating System Utility Software). This issue affects the function crypt of the file plugins/sudoers/auth/passwd.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:

Sudo 1.8.0 through 1.9.12, with the crypt() password backend, contains a plugins/sudoers/auth/passwd.c array-out-of-bounds error that can result in a heap-based buffer over-read. This can be triggered by arbitrary local users with access to Sudo by entering a password of seven characters or fewer. The impact could vary depending on the compiler and processor architecture.

The weakness was released 11/02/2022 as bd209b9f16fcd1270c13db27ae3329c677d48050. The advisory is shared at github.com. The identification of this vulnerability is CVE-2022-43995 since 10/28/2022. Technical details are known, but no exploit is available.

Applying the patch bd209b9f16fcd1270c13db27ae3329c677d48050 is able to eliminate this problem. The bugfix is ready for download at github.com.

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: 6.7
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

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: Partially
Local: Yes
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: bd209b9f16fcd1270c13db27ae3329c677d48050

Timelineinfo

10/28/2022 🔍
11/02/2022 +5 days 🔍
11/02/2022 +0 days 🔍
12/04/2022 +32 days 🔍

Sourcesinfo

Advisory: bd209b9f16fcd1270c13db27ae3329c677d48050
Status: Confirmed

CVE: CVE-2022-43995 (🔍)
GCVE (CVE): GCVE-0-2022-43995
GCVE (VulDB): GCVE-100-212861

Entryinfo

Created: 11/02/2022 20:54
Updated: 12/04/2022 09:23
Changes: 11/02/2022 20:54 (43), 12/04/2022 09:23 (12)
Complete: 🔍
Cache ID: 216::103

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