critical
9.1
CWE
125
Advisory Published
Updated

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

First published: Mon Aug 23 2021(Updated: )

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.

Credit: security@apache.org

Affected SoftwareAffected VersionHow to fix
Apache Portable Runtime=1.7.0
Oracle HTTP Server=12.2.1.3.0
Oracle HTTP Server=12.2.1.4.0
IBM Engineering Requirements Management DOORS<=9.7.2.8
IBM Engineering Requirements Management DOORS Web Access<=9.7.2.8

Remedy

https://dist.apache.org/repos/dist/release/apr/patches/apr-1.7.0-CVE-2021-35940.patch

Remedy

https://lists.apache.org/thread.html/rb1f3c85f50fbd924a0051675118d1609e57957a02ece7facb723155b@%3Cannounce.apache.org%3E

Remedy

https://www.oracle.com/security-alerts/cpujul2022.html

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2021-35940?

    CVE-2021-35940 is an out-of-bounds array read vulnerability in the apr_time_exp*() functions of the Apache Portable Runtime.

  • What is the severity of CVE-2021-35940?

    CVE-2021-35940 has a severity of 7.1 (high).

  • Which software versions are affected by CVE-2021-35940?

    Versions 1.7.0 of Apache Portable Runtime and 12.2.1.3.0 and 12.2.1.4.0 of Oracle HTTP Server are affected by CVE-2021-35940.

  • How was CVE-2021-35940 fixed?

    The out-of-bounds array read vulnerability in the apr_time_exp*() functions was fixed in the Apache Portable Runtime 1.6.3 release.

  • Are Apache Portable Runtime versions after 1.6.3 vulnerable to CVE-2021-35940?

    Yes, version 1.7.0 of Apache Portable Runtime regressed and is vulnerable to the same out-of-bounds array read issue as version 1.6.3.

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