CVE-2017-12165: red hat undertow
Vulnerability summary
CVE-2017-12165 is a high (CVSS 7.5) vulnerability in red hat undertow. EPSS estimates a 1.86% chance of exploitation in the next 30 days, higher than 79.2% of scored vulnerabilities.
Not severe (CVSS 2.6, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6Timeline
- 27-07-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
It was discovered that Undertow before 1.4.17, 1.3.31 and 2.0.0 processes http request headers with unusual whitespaces which can cause possible http request smuggling.
CVSS metrics
6 scores · 5 sources · 2 versions- CVE.orgCNA2.6LowCVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · MavenEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
1.86%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.86% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat2 products
- jboss_enterprise_application_platform7.0.0 | 7.1.0
- undertow≥ 1.0.0, < 1.3.31 | ≥ 1.4.0, < 1.4.17 | 2.0.0:alpha_1
Debian1 product
- undertow< 2.0.23-1
Io.undertow1 product
- undertow-core< 1.3.31 | ≥ 1.4.0, < 1.4.17 | ≥ 2.0.0.Alpha1, < 2.0.0.Beta1
Red hat1 product
- undertow1.4.17 | 1.3.31 | 2.0.0
Ubuntu1 product
- undertowAll versions (No fix recorded) | < 2.0.23-1
5 vendors · 6 products
References
20 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-12165X Refsource CONFIRMIssue TrackingVendor AdvisoryWEB
