LiveActive security incident?Get immediate response
CVE Record

CVE-2021-34428: For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, if an exception is thrown from the SessionListe...

For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2, if an exception is thrown from the SessionListener#sessionDestroyed() method, then the session ID is not invalidated in the session ID manager. On deployments with clustered sessions and multiple contexts this can result in a session not being invalidated. This can result in an application used on a shared computer being left logged in.

LowCVSS 2.9Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

This is a low-severity Jetty session cleanup flaw. In certain clustered, multi-context deployments, a logout or session expiry may fail to fully invalidate a session if application listener code throws an exception. The main business risk is residual access on shared computers, not remote takeover.

Executive priority

Treat as routine patch management unless the organization relies on shared computers, kiosks, or clustered Jetty applications handling sensitive sessions. It should not outrank remotely exploitable vulnerabilities, but it deserves cleanup during the next maintenance cycle.

Technical view

Eclipse Jetty versions <= 9.4.40, <= 10.0.2, and <= 11.0.2 may leave a session ID registered when SessionListener#sessionDestroyed() throws. The issue maps to CWE-613 and affects deployments with clustered sessions and multiple contexts, potentially preserving authenticated state after intended invalidation.

Likely exposure

Exposure is most likely in Java applications embedding affected Eclipse Jetty versions, especially clustered session deployments with multiple contexts. Downstream packages and vendor products may bundle Jetty, so direct dependency checks alone may miss exposure.

Exploitation context

The CVSS vector requires physical access and user interaction, and CISA KEV status is false in the supplied bundle. No cited source here establishes active exploitation. The credible scenario is shared-terminal residual login after failed session invalidation.

Researcher notes

The impact depends on deployment shape and application listener behavior. Validate session invalidation behavior in clustered, multi-context configurations. The supplied evidence supports affected Jetty version ranges and downstream advisory presence, but does not prove broad exploitation or product-specific impact beyond cited vendors.

Mitigation direction

  • Upgrade Eclipse Jetty outside the affected version ranges listed by the vendor.
  • Check downstream vendor advisories for products that bundle Jetty.
  • Prioritize shared-workstation and kiosk-style environments using Jetty-backed applications.
  • Review application SessionListener code for exception handling during session destruction.

Validation and detection

  • Inventory applications and appliances that embed Eclipse Jetty.
  • Record Jetty runtime versions, not only declared build dependencies.
  • Identify clustered session deployments with multiple application contexts.
  • Check logs for SessionListener#sessionDestroyed exceptions during logout or timeout.
  • Confirm updated packages through vendor, Debian, or product-specific advisories.
Prepared
Confidence
high
Sources
7

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.

cwe · low confidence lookup

CWE-613: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-34428 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
Low
CVSS
2.9 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

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
13Source 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
2.9CVSS 3.1LowCVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N0.42.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

2.9Low
CVSS 3.1 vector shape for CVE-2021-34428Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

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
The Eclipse FoundationEclipse Jetty9.0.0, unspecified, 10.0.0, unspecified, 11.0.0, unspecifiedListed
Weakness

CWE details

CWE-613

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

CWE-613 · source CWE mapping

Insufficient Session Expiration

Insufficient Session Expiration represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs