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CVE-2023-6780— Glibc: integer overflow in __vsyslog_internal()

Quick assessment

Affected
n/a glibc
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

glibc（GNU C Library）是GNU计划所实现的C标准库。 glibc 2.37及之前版本存在安全漏洞，该漏洞源于存在整数溢出，从而导致未定义的行为。

CVSS 5.3 · Medium EPSS 2.71% · P85

Affected Version Matrix 8

VendorProduct Version RangeStatus
Fedora Fedora any affected
n/a glibc 2.39 unaffected
Red Hat Red Hat Enterprise Linux 6 any unaffected
any unaffected
Red Hat Red Hat Enterprise Linux 7 any unaffected
any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 any unaffected
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I. Basic Information for CVE-2023-6780

Vulnerability Information
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Vulnerability Title
Glibc: integer overflow in __vsyslog_internal()
Source: CVE Program / CVE List V5
Vulnerability Description
An integer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a very long message, leading to an incorrect calculation of the buffer size to store the message, resulting in undefined behavior. This issue affects glibc 2.37 and newer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区大小计算不正确
Source: CVE Program / CVE List V5
Vulnerability Title
glibc 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
glibc（GNU C Library）是GNU计划所实现的C标准库。 glibc 2.37及之前版本存在安全漏洞，该漏洞源于存在整数溢出，从而导致未定义的行为。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- glibc 2.39 -
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Fedora Fedora - -

II. Public POCs for CVE-2023-6780

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III. Intelligence Information for CVE-2023-6780

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Vendor Advisories for CVE-2023-6780 (1)

Mailing List Discussions for CVE-2023-6780 (3)

Other References for CVE-2023-6780 (1)

Same Patch Batch · n/a · 2024-01-31 · 17 CVEs total

CVE-2023-6246 8.4 HIGH Glibc: heap-based buffer overflow in __vsyslog_internal()
CVE-2023-6779 8.2 HIGH Glibc: off-by-one heap-based buffer overflow in __vsyslog_internal()
CVE-2024-1117 7.3 HIGH openBI Screen.php index code injection
CVE-2024-1116 7.3 HIGH openBI Upload.php index unrestricted upload
CVE-2024-1115 7.3 HIGH openBI Setting.php dlfile os command injection
CVE-2024-1114 6.5 MEDIUM openBI Screen.php dlfile access control
CVE-2023-2439 6.4 MEDIUM WordPress plugin UserPro 安全漏洞
CVE-2024-1113 6.3 MEDIUM openBI Unity.php uploadUnity unrestricted upload
CVE-2024-1098 4.3 MEDIUM Rebuild proxy-download QiniuCloud.getStorageFile information disclosure
CVE-2024-1099 3.5 LOW Rebuild read-raw getFileOfData cross site scripting
CVE-2024-23745 Notion Web Clipper 安全漏洞
CVE-2024-22569 POSCMS 安全漏洞
CVE-2023-31505 Schlix CMS 安全漏洞
CVE-2024-23170 Mbed TLS 安全漏洞
CVE-2024-23775 Mbed TLS 安全漏洞
CVE-2022-47072 编号已被CVE保留

IV. Related Vulnerabilities

Same product: glibc
Same vendor: n/a
Same weakness: CWE-131

V. Comments for CVE-2023-6780

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