CVE-2016-4554: canonical ubuntu_linux
CVSS: 8.6v3.0HighModified
AliasesUBUNTU-CVE-2016-4554DEBIAN-CVE-2016-4554DLA-558-1
Published 10-05-2016Last modified 06-08-2024
Vulnerability summary
CVE-2016-4554 is a high (CVSS 8.6) vulnerability in canonical ubuntu_linux. EPSS estimates a 38.89% chance of exploitation in the next 30 days, higher than 98.5% of scored vulnerabilities.
CVSS score
8.6/10
010
High · v3.0 (NVD)EPSS score
38.89%
0%100%
High · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 10 · Related 4Timeline
- 10-05-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
mime_header.cc in Squid before 3.5.18 allows remote attackers to bypass intended same-origin restrictions and possibly conduct cache-poisoning attacks via a crafted HTTP Host header, aka a "header smuggling" issue.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.6Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated8.6HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated8.6HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
38.89%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 38.89% on 18-09-2026
18-09-202618-10-2026
EPSS score38.89%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 15.10 | 16.04
Debian1 product
- squid< 4.1-1 | < 2.7.STABLE9-4.1+deb7u2
Oracle1 product
- linuxEOL6 | 7
Squid-cache1 product
- squid≤ 3.5.17
Ubuntu1 product
- squid3< 3.3.8-1ubuntu6.8 | < 3.5.12-1ubuntu7.2
5 vendors · 5 products
References
21 links- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlX Refsource CONFIRMThird Party Advisory
