When apr_time_exp*() or apr_os_exp_time*() functions are invoked with an invalid month field value in Apache Portable Runtime APR 1.6.2 and prior, out of bounds memory may be accessed in converting this value to an apr_time_exp_t value, potentially revealing the contents of a different static heap value or resulting in program termination, and may represent an information disclosure or denial of service vulnerability to applications which call these APR functions with unvalidated external input.
https://svn.apache.org/viewvc?view=revision&revision=1807976
https://lists.debian.org/debian-lts-announce/2022/01/msg00023.html
https://lists.debian.org/debian-lts-announce/2017/11/msg00005.html
https://access.redhat.com/errata/RHSA-2018:1253
https://access.redhat.com/errata/RHSA-2018:0466
https://access.redhat.com/errata/RHSA-2018:0465
https://access.redhat.com/errata/RHSA-2018:0316
https://access.redhat.com/errata/RHSA-2017:3477
https://access.redhat.com/errata/RHSA-2017:3476
https://access.redhat.com/errata/RHSA-2017:3475
https://access.redhat.com/errata/RHSA-2017:3270
http://www.securitytracker.com/id/1042004