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CVE-2021-35940

HIGHCVSS 7.1/10EPSS 1.19%

Last modified

CVE-2021-35940 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 1.19% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.1/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Probability
1.19%

63.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ApachePortable Runtime1.7.0
OracleHttp Server12.2.1.3.0
OracleHttp Server12.2.1.4.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-35940?
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.
How severe is CVE-2021-35940?
CVE-2021-35940 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.
How do I fix CVE-2021-35940?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-35940?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST