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CVE-2022-39377— sysstat Incorrect Buffer Size calculation on 32-bit systems results in RCE via buffer overflow

Quick assessment

Affected
sysstat sysstat
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.

sysstat是一套适用于Linux平台的系统性能监控工具。 sysstat 9.1.16及之后版本至12.7.1之前版本存在安全漏洞，该漏洞源于allocate_structures函数在算术乘法之前没有充分检查边界，从而导致为表示系统活动的缓冲区分配的大小溢出，可能会导致远程代码执行(RCE)。

CVSS 7.0 · High EPSS 1.24% · P68

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2022-39377

Vulnerability Information
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Vulnerability Title
sysstat Incorrect Buffer Size calculation on 32-bit systems results in RCE via buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
sysstat is a set of system performance tools for the Linux operating system. On 32 bit systems, in versions 9.1.16 and newer but prior to 12.7.1, allocate_structures contains a size_t overflow in sa_common.c. The allocate_structures function insufficiently checks bounds before arithmetic multiplication, allowing for an overflow in the size allocated for the buffer representing system activities. This issue may lead to Remote Code Execution (RCE). This issue has been patched in version 12.7.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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
sysstat 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sysstat是一套适用于Linux平台的系统性能监控工具。 sysstat 9.1.16及之后版本至12.7.1之前版本存在安全漏洞，该漏洞源于allocate_structures函数在算术乘法之前没有充分检查边界，从而导致为表示系统活动的缓冲区分配的大小溢出，可能会导致远程代码执行(RCE)。
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
sysstat sysstat >= 9.1.16, < 12.7.1 -

II. Public POCs for CVE-2022-39377

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III. Intelligence Information for CVE-2022-39377

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Vendor Advisories for CVE-2022-39377 (2)

Mailing List Discussions for CVE-2022-39377 (4)

IV. Related Vulnerabilities

Same weakness: CWE-131

V. Comments for CVE-2022-39377

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