CVE-2021-35940 Details

CVE-2021-35940

Published: 2021-08-23
Last Modified: 2021-09-16
CVE Author: NIST National Vulnerability Database
CVE Assigner: security@apache.org
Summary

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.

Analysis
Common Vulnerability Score System v2.0
Severity Low
Base Score 3.6/10
Exploit Score 3.9/10
Access Vector Local
Access Complexity Low
Authentication None
Impact Score 4.9/10
Confidentiality Impact Partial
Availability Impact Partial
Integrity Impact None
Vector String AV:L/AC:L/Au:N/C:P/I:N/A:P
Common Vulnerability Score System v3.1
Severity High
Base Score 7.1/10
Exploit Score 1.8/10
Access Vector Local
Access Complexity Low
Privileges Required Low
Impact Score 5.2/10
Confidentiality Impact High
Availability Impact High
Integrity Impact None
Scope Unchanged
User Interaction None
Vector String CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Products Reported
CPE Vulnerable Start Excluding
cpe:2.3:a:apache:portable_runtime:*:*:*:*:*:*:*:* Yes - 1.7.0
References

http://mail-archives.apache.org/mod_mbox/www-announce/201710.mbox/%3CCACsi251B8UaLvM-rrH
https://lists.apache.org/thread.html/ra2868b53339a6af65577146ad87016368c138388b09bff9d28
http://svn.apache.org/viewvc?view=revision&revision=1891198
https://dist.apache.org/repos/dist/release/apr/patches/apr-1.7.0-CVE-2021-35940.patch
http://www.openwall.com/lists/oss-security/2021/08/23/1
https://lists.apache.org/thread.html/ra2868b53339a6af65577146ad87016368c138388b09bff9d28
https://lists.apache.org/thread.html/rb1f3c85f50fbd924a0051675118d1609e57957a02ece7facb7
https://lists.apache.org/thread.html/r7bb4a6ed88fc48152174e664aae30ea9a8b058eb5b44cf08cb
https://lists.apache.org/thread.html/r7bb4a6ed88fc48152174e664aae30ea9a8b058eb5b44cf08cb
https://lists.apache.org/thread.html/r72a069753b9363c29732e59ad8f0d22a633fb6a69998040751
https://lists.apache.org/thread.html/r317c398ee5736e627f7887b06607e5c58b45a696d352ba8c14
https://lists.apache.org/thread.html/ra38094406cc38a05218ebd1158187feda021b0c3a1df400bbf

CVE ID
CVE-2021-35940
Published
2021-08-23
Modified
2021-09-16
CVSSv2.0
Low
CVSSv3.1
High
PCI Compliance
Fail
US-CERT Alert
No
CWE
CWE-125

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