CVE-2017-18587

An issue was discovered in the hyper crate before 0.9.18 for Rust. It mishandles newlines in headers.

Published: 2019-08-26 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-18587 is rated Low Risk (36/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.21%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-18587

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-17 0.08% 0.21% +0.13%
2 2023-03-07 0.89% 0.08% -0.80%
3 2022-02-04 — 0.89% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-18587

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2017-18587

GitHub Security Advisory for CVE-2017-18587

GHSA-q89x-f52w-6hj2 · Severity: medium · Ecosystem: rust — Headers containing newline characters can split messages in hyper

OS Trackers for CVE-2017-18587

vendor priority summary link
debian unimportant CVE-2017-18587 unimportant priority: Debian including 1 source packages (rust-hyper), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2017-18587

Affected software / configurations for CVE-2017-18587

Vendor Product Version Raw CPE
hyper hyper < 0.9.18 cpe:2.3:a:hyper:hyper:*:*:*:*:*:*:*:*
hyper hyper >= 0.10.0, < 0.10.2 cpe:2.3:a:hyper:hyper:*:*:*:*:*:*:*:*

References for CVE-2017-18587

cvelogic Threat Intelligence