CVE-2016-8743

high

Published 2017-07-27 · Modified 2026-05-13

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CVSS v3

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.5

Description

Apache HTTP Server, in all releases prior to 2.2.32 and 2.4.25, was liberal in the whitespace accepted from requests and sent in response lines and headers. Accepting these different behaviors represented a security concern when httpd participates in any chain of proxies or interacts with back-end application servers, either through mod_proxy or using conventional CGI mechanisms, and may result in request smuggling, response splitting and cache pollution.

Predictions

Exploit likelihood

83%

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.

OS impact

Red Hat Affected 7 releases

Version	Status	Fixed in
7.7	Affected	—
7.6	Affected	—
7.5	Affected	—
7.4	Affected	—
7.3	Affected	—
7.0	Affected	—
6.0	Affected	—

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Mixed 7 releases

Version	Status	Fixed in
trixie	Fixed	`2.4.25-1`
sid	Fixed	`2.4.25-1`
forky	Fixed	`2.4.25-1`
bullseye	Fixed	`2.4.25-1`
bookworm	Fixed	`2.4.25-1`
9.0	Affected	—
8.0	Affected	—

Application impact

Vendor	Product	Versions
apache	http_server	`{"startIncluding":"2.2.0","endIncluding":"2.2.31"}`
netapp	clustered_data_ontap	`-`
netapp	oncommand_unified_manager	`-`
redhat	jboss_core_services	`1.0`
apache	http_server	`{"startIncluding":"2.4.1","endIncluding":"2.4.23"}`

References

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

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