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CVE-2021-35940— Regression of CVE-2017-12613

Quick assessment

Affected
Apache Software Foundation Apache Portable Runtime (APR)
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.

Apache Portable Runtime（APR,Apache可移植运行库）是美国阿帕奇（Apache）基金会的一个为上层应用程序提供可跨越多个操作系统平台使用的底层支持接口库。 Apache Portable Runtime 1.7.0版本存在安全漏洞，该漏洞源于软件中apr_time_exp*()函数中超出边界的数组读取问题。

AI Predicted 5.3 Difficulty: Moderate EPSS 1.19% · P65

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-35940

Vulnerability Information
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Vulnerability Title
Regression of CVE-2017-12613
Source: CVE Program / CVE List V5
Vulnerability Description
An out-of-bounds array read in the apr_time_exp*() functions was fixed in the Apache Portable Runtime 1.6.3 release (CVE-2017-12613). The fix for this issue was not carried forward to the APR 1.7.x branch, and hence version 1.7.0 regressed compared to 1.6.3 and is vulnerable to the same issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Portable Runtime 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Portable Runtime（APR,Apache可移植运行库）是美国阿帕奇（Apache）基金会的一个为上层应用程序提供可跨越多个操作系统平台使用的底层支持接口库。 Apache Portable Runtime 1.7.0版本存在安全漏洞，该漏洞源于软件中apr_time_exp*()函数中超出边界的数组读取问题。
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
Apache Software Foundation Apache Portable Runtime (APR) Apache Portable Runtime 1.7.0 -

II. Public POCs for CVE-2021-35940

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III. Intelligence Information for CVE-2021-35940

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Vendor Advisories for CVE-2021-35940 (1)

Mailing List Discussions for CVE-2021-35940 (13)

Other References for CVE-2021-35940 (2)

IV. Related Vulnerabilities

Same product: Apache Portable Runtime (APR)
Same vendor: Apache Software Foundation

V. Comments for CVE-2021-35940

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