libtar-1.2.20-17.el8

The libtar packages contain a C library for manipulating tar archives. The library supports both the strict POSIX tar format and many of the commonly used GNU extensions.

Security Fix(es):

* libtar: out-of-bounds read in gnu_longlink (CVE-2021-33643)
* libtar: out-of-bounds read in gnu_longname (CVE-2021-33644)
* libtar: memory leak found in th_read() function (CVE-2021-33645)
* libtar: memory leak found in th_read() function (CVE-2021-33646)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

CVE-2021-33643
An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.
CVE-2021-33644
An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longname, causing an out-of-bounds read.
CVE-2021-33645
The th_read() function doesn’t free a variable t->th_buf.gnu_longlink after allocating memory, which may cause a memory leak.
CVE-2021-33646
The th_read() function doesn’t free a variable t->th_buf.gnu_longname after allocating memory, which may cause a memory leak.