CVE-2019-10149

critical KEV

Published 2022-01-10 · Modified 2022-01-10

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

—

CVSS v4 NEW

—

not yet in upstream

VIR risk

10.0

Description

Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

CISA KEV

Vendor: Exim
Product: Mail Transfer Agent (MTA)
Due date: 2022-07-10

Predictions

Exploit likelihood

99%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-47307 local linux verified

Metasploit · 2019-08-26

Exim 4.87 / 4.91 - Local Privilege Escalation (Metasploit)

Source code queued for fetch — refresh in a moment.

EDB-46996 local linux verified

Marco Ivaldi · 2019-06-17

Exim 4.87 - 4.91 - Local Privilege Escalation

Source code queued for fetch — refresh in a moment.

EDB-46974 remote linux

Qualys Corporation · 2019-06-05

Exim 4.87 < 4.91 - (Local / Remote) Command Execution

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_linux/local/exim4_deliver_message_priv_esc rank 600

Exim 4.87 - 4.91 Local Privilege Escalation

Source code queued for fetch — refresh in a moment.

OS impact

Arch Fixed 1 release

Version	Status	Fixed in
—	Fixed	`4.92-1`

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`4.92~RC3-1`
sid	Fixed	`4.92~RC3-1`
forky	Fixed	`4.92~RC3-1`
bullseye	Fixed	`4.92~RC3-1`
bookworm	Fixed	`4.92~RC3-1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.