HOMEVULNERABILITIESCVE-2017-17476
HIGH

CVE-2017-17476

CWE-200Published: December 20, 2017· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

Open Ticket Request System (OTRS) 4.0.x before 4.0.28, 5.0.x before 5.0.26, and 6.0.x before 6.0.3, when cookie support is disabled, might allow remote attackers to hijack web sessions and consequently gain privileges via a crafted email.

NVD Source

Technical Analysis

CVE-2017-17476 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

Debian1 product(s)
debian linux
otrs1 product(s)
otrs
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/OTRS/otrs/commit/26707eaaa791648e6c7ad6aeaa27efd70e7c66eb
PATCHhttps://github.com/OTRS/otrs/commit/36e3be99cfe8a9e09afa1b75fdc39f3e28f561fc
PATCHhttps://github.com/OTRS/otrs/commit/720c73fbf53e476ca7dfdf2ae1d4d3d2aad2b953
PATCHhttps://www.otrs.com/security-advisory-2017-10-security-update-otrs-framework/
PATCHhttps://github.com/OTRS/otrs/commit/26707eaaa791648e6c7ad6aeaa27efd70e7c66eb
PATCHhttps://github.com/OTRS/otrs/commit/36e3be99cfe8a9e09afa1b75fdc39f3e28f561fc
PATCHhttps://github.com/OTRS/otrs/commit/720c73fbf53e476ca7dfdf2ae1d4d3d2aad2b953
PATCHhttps://www.otrs.com/security-advisory-2017-10-security-update-otrs-framework/
ADVISORYhttps://lists.debian.org/debian-lts-announce/2017/12/msg00018.html
ADVISORYhttps://www.debian.org/security/2017/dsa-4069
ADVISORYhttps://lists.debian.org/debian-lts-announce/2017/12/msg00018.html
ADVISORYhttps://www.debian.org/security/2017/dsa-4069

All References (12)

→
https://github.com/OTRS/otrs/commit/26707eaaa791648e6c7ad6aeaa27efd70e7c66ebPatch · Third Party Advisory
→
https://github.com/OTRS/otrs/commit/36e3be99cfe8a9e09afa1b75fdc39f3e28f561fcPatch · Third Party Advisory
→
https://github.com/OTRS/otrs/commit/720c73fbf53e476ca7dfdf2ae1d4d3d2aad2b953Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2017/12/msg00018.htmlMailing List · Third Party Advisory
→
https://www.debian.org/security/2017/dsa-4069Third Party Advisory
→
https://www.otrs.com/security-advisory-2017-10-security-update-otrs-framework/Patch · Vendor Advisory
→
https://github.com/OTRS/otrs/commit/26707eaaa791648e6c7ad6aeaa27efd70e7c66ebPatch · Third Party Advisory
→
https://github.com/OTRS/otrs/commit/36e3be99cfe8a9e09afa1b75fdc39f3e28f561fcPatch · Third Party Advisory
→
https://github.com/OTRS/otrs/commit/720c73fbf53e476ca7dfdf2ae1d4d3d2aad2b953Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2017/12/msg00018.htmlMailing List · Third Party Advisory
→
https://www.debian.org/security/2017/dsa-4069Third Party Advisory
→
https://www.otrs.com/security-advisory-2017-10-security-update-otrs-framework/Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2017-17476
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-200
CISA KEVNo
Affected2 vendor(s)
PublishedDec 20, 2017

Related CVEs (CWE-200)

CVE-2011-1643
10.0
CVE-2011-0376
10.0
CVE-2008-0082
10.0
CVE-2022-29165
10.0
CVE-2008-3914
10.0
CVE-2015-0987
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-17476 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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