- Description
- Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.5.7, 0.4.20, 0.3.9, and 0.2.5, there is a possibility for denial of service by memory exhaustion when net-imap reads server responses. At any time while the client is connected, a malicious server can send can send a "literal" byte count, which is automatically read by the client's receiver thread. The response reader immediately allocates memory for the number of bytes indicated by the server response. This should not be an issue when securely connecting to trusted IMAP servers that are well-behaved. It can affect insecure connections and buggy, untrusted, or compromised servers (for example, connecting to a user supplied hostname). This issue has been patched in versions 0.5.7, 0.4.20, 0.3.9, and 0.2.5.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
CVSS 4.0
- Type
- Secondary
- Base score
- 6
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- MEDIUM
CVSS 3.1
- Type
- Primary
- Base score
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity
- HIGH
- Hype score
- Not currently trending
Ruby: CVE-2025-43857: DoS vulnerability in net-imap https://t.co/wMQ9AuD3Vq #rubylang #devtalk
@dev_talk
2 May 2025
14 Impressions
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🚨 Lambda Watchdog detected a new MEDIUM severity CVE 🚨 CVE-2025-43857 was detected in the latest AWS Lambda image scan affecting the net-imap package in 4 images. Check the full report 👉 https://t.co/6EUGaPyRZk #AWS #Lambda #CVE #CloudSecurity #Serverless
@LambdaWatchdog
29 Apr 2025
4 Impressions
0 Retweets
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