LiveActive security incident?Get immediate response
CVE Record

CVE-2019-4186: IBM Jazz for Service Management 1.1.3 is vulnerable to HTTP header injection, caused by incorrect trust in...

IBM Jazz for Service Management 1.1.3 is vulnerable to HTTP header injection, caused by incorrect trust in the HTTP Host header during caching. By sending a specially crafted HTTP GET request, a remote attacker could exploit this vulnerability to inject arbitrary HTTP headers, which will allow the attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking. IBM X-force ID: 158976.

MediumCVSS 5.3Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Jazz for Service Management 1.1.3 can trust a user-supplied Host header during caching. A remote, unauthenticated attacker could use that weakness to inject HTTP headers, potentially supporting cross-site scripting, cache poisoning, or session hijacking. The known impact is integrity-focused and rated medium, not a confirmed mass-exploitation emergency.

Executive priority

Treat this as a moderate-priority legacy platform issue. It is not shown as actively exploited, but exposed management services can create business risk through cache poisoning or session abuse. Confirm whether version 1.1.3 exists and remediate through IBM guidance.

Technical view

The issue is HTTP header injection caused by incorrect trust in the HTTP Host header during caching. CVSS v3.0 is 5.3: network reachable, low attack complexity, no privileges or user interaction, unchanged scope, low integrity impact, and no confidentiality or availability impact.

Likely exposure

Exposure is likely confined to environments running IBM Jazz for Service Management 1.1.3, especially where the web interface is reachable by untrusted users or sits behind shared caching or proxy infrastructure that forwards unvalidated Host headers.

Exploitation context

The bundle does not show CISA KEV listing or cited active exploitation. The CVE states a remote attacker could send a specially crafted HTTP GET request, but this analysis does not include exploit steps or assume public weaponization.

Researcher notes

Key evidence comes from the CVE and IBM/X-Force references. The bundle does not provide CWE mapping, exploit status, or detailed fix version text. Validation should focus on version confirmation, exposure path, Host header handling, and whether IBM remediation is present.

Mitigation direction

  • Review IBM advisory guidance for the supported fix or interim remediation.
  • Restrict external access to Jazz for Service Management until remediation is confirmed.
  • Ensure proxies reject unexpected Host headers before traffic reaches the application.
  • Avoid shared caching of responses influenced by untrusted request headers.
  • Prioritize vendor-recommended remediation over compensating controls.

Validation and detection

  • Inventory IBM Jazz for Service Management deployments and confirm whether version 1.1.3 is present.
  • Check whether IBM's advisory remediation has been applied to every exposed instance.
  • Review proxy and caching layers for reliance on client-supplied Host headers.
  • Confirm logs show no Host-header anomalies if relevant logging is available.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2019-4186 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.3 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AC:L/AV:N/UI:N/A:N/I:L/PR:N/C:N/S:U/E:U/RC:C/RL:O

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.3CVSS 3.0MediumCVSS:3.0/AC:L/AV:N/UI:N/A:N/I:L/PR:N/C:N/S:U/E:U/RC:C/RL:O3.91.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.3Medium
CVSS 3.0 vector shape for CVE-2019-4186Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AC:L/AV:N/UI:N/A:N/I:L/PR:N/C:N/S:U/E:U/RC:C/RL:O

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
IBMJazz for Service Management1.1.3Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.