GNU C Library no-aaaa Mode getaddrinfo stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in GNU C Library. Affected by this issue is the function getaddrinfo of the component no-aaaa Mode. The manipulation leads to stack-based overflow. This vulnerability is uniquely identified as CVE-2023-4527. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in GNU C Library (Software Library) (the affected version is unknown). This issue affects the function getaddrinfo of the component no-aaaa Mode. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 09/12/2023. The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2023-4527 since 08/24/2023. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/17/2025).

The vulnerability scanner Nessus provides a plugin with the ID 236691 (Alibaba Cloud Linux 3 : 0124: glibc (ALINUX3-SA-2023:0124)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (236691). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / 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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Nessus ID: 236691
Nessus Name: Alibaba Cloud Linux 3 : 0124: glibc (ALINUX3-SA-2023:0124)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/24/2023 🔍
09/12/2023 +19 days 🔍
09/12/2023 +0 days 🔍
05/17/2025 +613 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: RHSA-2023:5453
Status: Not defined

CVE: CVE-2023-4527 (🔍)
GCVE (CVE): GCVE-0-2023-4527
GCVE (VulDB): GCVE-100-239537

Entryinfo

Created: 09/12/2023 19:19
Updated: 05/17/2025 16:10
Changes: 09/12/2023 19:19 (38), 10/05/2023 13:43 (1), 10/10/2023 14:44 (2), 10/10/2023 14:46 (12), 09/16/2024 17:30 (27), 05/17/2025 16:10 (2)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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