CVE Tools
Sign in

CVE-2021-40110

Apache James IMAP vulnerable to a ReDoS

Published: Jan 4, 2022Updated: Nov 21, 2024 Sources: CVE List NVD GHSANVD-CWE-Other
7.5HIGH
NVD MITRE
EPSS Score
2.9%
Top 14.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

In Apache James, using Jazzer fuzzer, we identified that an IMAP user can craft IMAP LIST commands to orchestrate a Denial Of Service using a vulnerable Regular expression. This affected Apache James prior to 3.6.1 We recommend upgrading to Apache James 3.6.1 or higher , which enforce the use of RE2J regular expression engine to execute regex in linear time without back-tracking.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

NVD-CWE-Other

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache JamesOn-premWeb App
Communications / email-server-client
Maven
package-ecosystem
org.apache.james:james-server
OSS Libraries
apache
oss-project·USaka apache http server, apache httpd
jamesOn-premWeb App
Web & CMS Plugins

Exploitability

Official Patch Available
Is your org exposed to CVE-2021-40110?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://www.openwall.com/lists/oss-security/2022/01/04/2
openwall.com
http://www.openwall.com/lists/oss-security/2022/01/04/2
openwall.com
https://nvd.nist.gov/vuln/detail/CVE-2021-40110
nvd.nist.gov

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-40110 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows