mail/exim: update to 4.94.2 security release
* New upstream security release.
+ Release based on +fixes branch.
+ Fixes multiple security vulnerabilities reported by Qualys and adds
related robustness improvements. (Special thanks to Heiko)
CVE-2020-28023: Out-of-bounds read in smtp_setup_msg()
CVE-2020-28007: Link attack in Exim's log directory
CVE-2020-28016: Heap out-of-bounds write in parse_fix_phrase()
CVE-2020-28012: Missing close-on-exec flag for privileged pipe
CVE-2020-28024: Heap buffer underflow in smtp_ungetc()
CVE-2020-28009: Integer overflow in get_stdinput()
CVE-2020-28015, CVE-28021: New-line injection into spool header file
CVE-2020-28026: Line truncation and injection in spool_read_header()
CVE-2020-28022: Heap out-of-bounds read and write in extract_option()
CVE-2020-28017: Integer overflow in receive_add_recipient()
CVE-2020-28013: Heap buffer overflow in parse_fix_phrase()
CVE-2020-28011: Heap buffer overflow in queue_run()
CVE-2020-28010: Heap out-of-bounds write in main()
CVE-2020-28018: Use-after-free in tls-openssl.c
CVE-2020-28025: Heap out-of-bounds read in pdkim_finish_bodyhash()
CVE-2020-28014, CVE-2021-27216: PID file handling
CVE-2020-28008: Assorted attacks in Exim's spool directory
CVE-2020-28019: Failure to reset function pointer after BDAT error
* Incorporate debian patches to turn taint failures into warnings.
mail/exim: import exim-4.94+fixes branch as state of 2020.09.09
Used git diffs:
[27/37] Fix spelling of local_part_data in docs and debug output
[27/37] Fix spelling of local_part_data in docs and debug output
[28/37] Fix ${readsocket } eol-replacement. Bug 2630
[29/37] Taint: fix off-by-one in is_tainted(). Bug 2634
[30/37] Build: ifdef guard for EXPERIMENTAL_QUEUEFILE
[31/37] Taint: fix off-by-one in is_tainted(). Bug 2634
[32/37] DANE: force SNI to use $domain. Bug 2265
[33/37] DANE: Fix 2-rcpt message, diff domins case. Bug 2265
[34/37] Fix non-DANE build
[35/37] DANE: Fix 2 messages from queue case
[36/37] Fix non-DANE build
While here, make SPF option turned on by default
MFH: 2020Q3