// For flags

CVE-2021-35940

Regression of CVE-2017-12613

Severity Score

7.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se ha corregido una lectura de matrices fuera de límites en la función apr_time_exp*() en Apache Portable Runtime versión 1.6.3 (CVE-2017-12613). La corrección de este problema no se trasladó a la rama APR versión 1.7.x, por lo que la versión 1.7.0 retrocedió en comparación con la versión 1.6.3 y es vulnerable al mismo problema.

It was discovered that APR incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information.

*Credits: The Apache Portable Runtime project would like to thank Iveta Cesalova (Red Hat) for reporting this issue.
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-06-29 CVE Reserved
  • 2021-08-23 CVE Published
  • 2024-08-04 CVE Updated
  • 2025-06-14 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
CAPEC
References (16)
URL Tag Source
http://mail-archives.apache.org/mod_mbox/www-announce/201710.mbox/%3CCACsi251B8UaLvM-rrH9fv57-zWi0zhyF3275_jPg1a9VEVVoxw%40mail.gmail.com%3E X_refsource_misc
http://www.openwall.com/lists/oss-security/2021/08/23/1 Mailing List
https://lists.apache.org/thread.html/r1c788464a25fbc046a72aff451bc8186386315d92a2dd0349903fa4f%40%3Cdev.tomcat.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r317c398ee5736e627f7887b06607e5c58b45a696d352ba8c14615f55%40%3Cdev.apr.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r54c755c74b9e3846cfd84039b1967d37d2870750a02d7c603983f6ed%40%3Cdev.tomcat.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r72479f4dcffaa8a4732d5a0e87fecc4bace4932e28fc26f7d400e2b3%40%3Cdev.tomcat.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r72a069753b9363c29732e59ad8f0d22a633fb6a699980407511ac961%40%3Cdev.apr.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r7bb4a6ed88fc48152174e664aae30ea9a8b058eb5b44cf08cb9beb4b%40%3Cdev.apr.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r7bb4a6ed88fc48152174e664aae30ea9a8b058eb5b44cf08cb9beb4b%40%3Cdev.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/ra38094406cc38a05218ebd1158187feda021b0c3a1df400bbf296af8%40%3Cdev.apr.apache.org%3E Mailing List
https://lists.apache.org/thread.html/rafe54755850e93de287c36540972457b2dd86332106aa7817c7c27fb%40%3Cdev.tomcat.apache.org%3E Mailing List
https://lists.apache.org/thread.html/rb1f3c85f50fbd924a0051675118d1609e57957a02ece7facb723155b%40%3Cannounce.apache.org%3E Mailing List
URL Date SRC
URL Date SRC
https://dist.apache.org/repos/dist/release/apr/patches/apr-1.7.0-CVE-2021-35940.patch 2023-11-07
https://www.oracle.com/security-alerts/cpujul2022.html 2023-11-07
URL Date SRC
http://svn.apache.org/viewvc?view=revision&revision=1891198 2023-11-07
https://lists.apache.org/thread.html/ra2868b53339a6af65577146ad87016368c138388b09bff9d2860f50e%40%3Cdev.apr.apache.org%3E 2023-11-07
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apache
Search vendor "Apache"
 Portable Runtime
Search vendor "Apache" for product "Portable Runtime"
 1.7.0
Search vendor "Apache" for product "Portable Runtime" and version "1.7.0"
-
Affected
Oracle
Search vendor "Oracle"
 Http Server
Search vendor "Oracle" for product "Http Server"
 12.2.1.3.0
Search vendor "Oracle" for product "Http Server" and version "12.2.1.3.0"
-
Affected
Oracle
Search vendor "Oracle"
 Http Server
Search vendor "Oracle" for product "Http Server"
 12.2.1.4.0
Search vendor "Oracle" for product "Http Server" and version "12.2.1.4.0"
-
Affected