Vulnerability · Published Feb 10, 2025 · Assigned by GitHub_M
CVE-2025-25186Net::IMAP vulnerable to possible DoS by memory exhaustion
Medium 6.5
In plain English
A medium-severity uncontrolled resource consumption in net-imap from ruby. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.6%top 49.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | ruby | 3.3.8-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | ruby-bundled-gems | 3.3.8-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | ruby-default-gems | 3.3.8-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | ruby-default-gems | 3.3.8-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | ruby-devel | 3.3.8-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | ruby-doc | 3.3.8-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | ruby-doc | 3.3.8-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | ruby-libs | 3.3.8-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-abrt | 0.4.0-1.module_el8.10.0+3799+191214cc | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-abrt-doc | 0.4.0-1.module_el8.10.0+3799+191214cc | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-bigdecimal | 3.1.5-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-bundler | 2.5.22-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-bundler | 2.5.22-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-io-console | 0.7.1-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-irb | 1.13.1-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-irb | 1.13.1-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-json | 2.7.2-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-minitest | 5.20.0-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-minitest | 5.20.0-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-mysql2 | 0.5.5-1.module_el8.10.0+3799+191214cc | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-mysql2-doc | 0.5.5-1.module_el8.10.0+3799+191214cc | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-pg | 1.5.4-1.module_el8.10.0+3799+191214cc | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-pg-doc | 1.5.4-1.module_el8.10.0+3799+191214cc | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-power_assert | 2.0.3-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-power_assert | 2.0.3-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-psych | 5.1.2-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-racc | 1.7.3-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-rake | 13.1.0-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-rake | 13.1.0-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:8 | rubygem-rbs | 3.4.0-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-rdoc | 6.6.3.1-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-rdoc | 6.6.3.1-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-rexml | 3.3.9-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-rexml | 3.3.9-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-rss | 0.3.1-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-rss | 0.3.1-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-test-unit | 3.6.1-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-test-unit | 3.6.1-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygem-typeprof | 0.21.9-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygem-typeprof | 0.21.9-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygems | 3.5.22-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygems | 3.5.22-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| AlmaLinux:10 | rubygems-devel | 3.5.22-10.el10_0 | ALSA-2025:8131 |
| AlmaLinux:8 | rubygems-devel | 3.5.22-4.module_el8.10.0+4022+8b66723c | ALSA-2025:10217 |
| Debian:12 | ruby3.1 | no fix listed | DEBIAN-CVE-2025-25186 |
| Debian:13 | ruby3.3 | 3.3.8-1 | DEBIAN-CVE-2025-25186 |
| Debian:14 | ruby3.3 | 3.3.8-1 | DEBIAN-CVE-2025-25186 |
| Rocky Linux:10 | ruby | 0:3.3.8-10.el10_0 | RLSA-2025:8131 |
| Rocky Linux:8 | ruby | 0:3.3.8-4.module+el8.10.0+2004+fd6e8d72 | RLSA-2025:10217 |
| Rocky Linux:9 | ruby | 0:3.3.8-4.module+el9.6.0+31867+3a5bf654 | RLSA-2025:4493 |
| Rocky Linux:8 | rubygem-abrt | 0:0.4.0-1.module+el8.10.0+1820+f3fffb92 | RLSA-2025:10217 |
| Rocky Linux:8 | rubygem-abrt | 0:0.4.0-1.module+el8.10.0+1826+b62220b4 | RLSA-2025:10217 |
| Rocky Linux:8 | rubygem-abrt | 0:0.4.0-1.module+el8.10.0+1741+bdb5b6ca | RLSA-2025:10217 |
| Rocky Linux:8 | rubygem-abrt | 0:0.4.0-1.module+el8.10.0+1679+61871737 | RLSA-2025:10217 |
| Rocky Linux:8 | rubygem-abrt | 0:0.4.0-1.module+el8.9.0+1537+0b2034bd | RLSA-2025:10217 |
| Rocky Linux:8 | rubygem-abrt | 0:0.4.0-1.module+el8.5.0+668+665814fa | RLSA-2025:10217 |
| Rocky Linux:8 | rubygem-abrt | 0:0.4.0-1.module+el8.10.0+1827+16ecb9d2 | RLSA-2025:10217 |
| Rocky Linux:8 | rubygem-mysql2 | 0:0.5.5-1.module+el8.10.0+1827+16ecb9d2 | RLSA-2025:10217 |
| Rocky Linux:8 | rubygem-mysql2 | 0:0.5.5-1.module+el8.10.0+1679+61871737 | RLSA-2025:10217 |
| Rocky Linux:9 | rubygem-mysql2 | 0:0.5.5-1.module+el9.6.0+31867+3a5bf654 | RLSA-2025:4493 |
| Rocky Linux:8 | rubygem-pg | 0:1.5.4-1.module+el8.10.0+1679+61871737 | RLSA-2025:10217 |
| Rocky Linux:8 | rubygem-pg | 0:1.5.4-1.module+el8.10.0+1827+16ecb9d2 | RLSA-2025:10217 |
| Rocky Linux:9 | rubygem-pg | 0:1.5.4-1.module+el9.6.0+31867+3a5bf654 | RLSA-2025:4493 |
| RubyGems | net-imap | 0.5.6 | GHSA-7fc5-f82f-cx69 |
| RubyGems | net-imap | 0.3.8 | GHSA-7fc5-f82f-cx69 |
| RubyGems | net-imap | 0.4.19 | GHSA-7fc5-f82f-cx69 |
| Ubuntu:22.04:LTS | ruby3.0 | 3.0.2-7ubuntu2.10 | USN-7418-1 |
| Ubuntu:24.04:LTS | ruby3.2 | 3.2.3-1ubuntu0.24.04.5 | USN-7418-1 |
| Ubuntu:24.04:LTS | ruby3.2 | 3.2.3-1ubuntu0.24.04.5 | UBUNTU-CVE-2025-25186 |
Affected products (as reported)
Weakness: CWE-400, CWE-405, CWE-409, CWE-770, CWE-789, CWE-1287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://github.com/ruby/net-imap/security/advisories/GHSA-7fc5-f82f-cx69 x_refsource_CONFIRM
- https://github.com/ruby/net-imap/commit/70e3ddd071a94e450b3238570af482c296380b35 x_refsource_MISC
- https://github.com/ruby/net-imap/commit/c8c5a643739d2669f0c9a6bb9770d0c045fd74a3 x_refsource_MISC
- https://github.com/ruby/net-imap/commit/cb92191b1ddce2d978d01b56a0883b6ecf0b1022 x_refsource_MISC