CVE-2025-25186

Publication date 10 February 2025

Last updated 7 April 2025

Ubuntu priority

Low

Why this priority?

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Starting in version 0.3.2 and prior to versions 0.3.8, 0.4.19, and 0.5.6, there is a possibility for denial of service by memory exhaustion in `net-imap`'s response parser. At any time while the client is connected, a malicious server can send can send highly compressed `uid-set` data which is automatically read by the client's receiver thread. The response parser uses `Range#to_a` to convert the `uid-set` data into arrays of integers, with no limitation on the expanded size of the ranges. Versions 0.3.8, 0.4.19, 0.5.6, and higher fix this issue. Additional details for proper configuration of fixed versions and backward compatibility are available in the GitHub Security Advisory.

Read the notes from the security team

Why is this CVE low priority?

Memory consumption issue by malicious imap server

Learn more about Ubuntu priority

Status

Package Ubuntu Release Status
ruby2.3 24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
16.04 LTS xenial
Not affected
ruby2.5 24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Not affected
ruby2.7 24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal
Not affected
ruby3.0 24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy
Not affected
20.04 LTS focal Not in release
ruby3.2 24.10 oracular Not in release
24.04 LTS noble
Fixed 3.2.3-1ubuntu0.24.04.5
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
ruby3.3 24.10 oracular
Fixed 3.3.4-2ubuntu5.2
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release

Notes

allenpthuang

net-imap is bundled in `.bundle/gems/net-imap-*`.

mdeslaur

ruby3.2 bundles net-imap-0.3.4.1 ruby3.3 bundles net-imap-0.4.9.1 This is only a memory consumption issue by a malicious imap server

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
ruby3.2
ruby3.3

References

Related Ubuntu Security Notices (USN)

Other references