Net::IMAP 安全漏洞

Net::IMAP is a Ruby client API for the IMAP message access protocol, developed by Ruby Open Source. Versions of Net::IMAP prior to 0.3.10, 0.4.24, 0.5.14, and 0.6.4 contained security vulnerabilities. These vulnerabilities stemmed from the possibility for man-in-the-middle attackers to cause...

Ruby net-imap < 0.4.24 / 0.5.x < 0.5.14 / 0.6.x < 0.6.4 Multiple Vulnerabilities

The version of the net-imap Ruby library installed on the remote host is prior to 0.4.24, 0.5.x prior to 0.5.14, or 0.6.x prior to 0.6.4. It is, therefore, affected by multiple vulnerabilities. - The Net::IMAP::ResponseReader component is affected by a quadratic time complexity flaw when parsing...

Ruby net-imap < 0.3.10 / 0.4.x < 0.4.24 / 0.5.x < 0.5.14 / 0.6.x < 0.6.4 vulnerability

The version of the net-imap Ruby library installed on the remote host is prior to 0.3.10, 0.4.x prior to 0.4.24, 0.5.x prior to 0.5.14, or 0.6.x prior to 0.6.4. It is, therefore, affected by a man-in-the-middle vulnerability. A flaw in the Net::IMAPstarttls function allows a man-in-the-middle...

Ruby net-imap 0.4.x < 0.4.24 / 0.5.x < 0.5.14 / 0.6.x < 0.6.4 vulnerability

The version of the net-imap Ruby library installed on the remote host is prior to 0.4.x prior to 0.4.24, 0.5.x prior to 0.5.14, or 0.6.x prior to 0.6.4. It is, therefore, affected by a computational denial-of-service vulnerability. A denial of service vulnerability exists when authenticating a...

CRLF Injection

Overview Affected versions of this package are vulnerable to CRLF Injection via the handling of raw string arguments in commands such as uidsearch, search, uidfetch, fetch, uidstore, store, and setquota. A user can execute arbitrary IMAP commands by injecting specially crafted input containing CR...

net-imap vulnerable to command Injection via "raw" arguments to multiple commands

Summary Several Net::IMAP commands accept a raw string argument that is sent to the server without validation or escaping. If this string is derived from user-controlled input, it may contain contain CRLF sequences, which an attacker can use to inject arbitrary IMAP commands. Details Net::IMAP's...

net-imap vulnerable to command Injection via unvalidated Symbol inputs

Summary Symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. Details Symbol arguments represent IMAP "system flags", which are formatted as "atoms" with no quoting with a "" prefix. Vulnerable versions of Net::IMAP...

CRLF Injection

Overview Affected versions of this package are vulnerable to CRLF Injection via unvalidated flag arguments in IMAP commands. A user can execute arbitrary IMAP commands by injecting CRLF sequences through crafted Symbol inputs. Remediation Upgrade net-imap to version 0.4.24, 0.5.14, 0.6.4 or highe...

Use of Blocking Code in Single-threaded, Non-blocking Context

Overview Affected versions of this package are vulnerable to Use of Blocking Code in Single-threaded, Non-blocking Context through the OpenSSL::KDF.pbkdf2hmac function during SCRAM authentication. An attacker can cause the Ruby client VM to become unresponsive by sending a large iteration count...

GHSA-87PF-FPWV-P7M7 net-imap vulnerable to denial of service via high iteration count for `SCRAM-*` authentication

Summary When authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational denial-of-service attack on the client process by sending a big iteration count value. Details A hostile IMAP server can send an arbitrarily large PBKDF2 iteration count in the...

net-imap vulnerable to denial of service via high iteration count for `SCRAM-*` authentication

Summary When authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational denial-of-service attack on the client process by sending a big iteration count value. Details A hostile IMAP server can send an arbitrarily large PBKDF2 iteration count in the...

Inefficient Algorithmic Complexity

Overview Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity through the ResponseReader class. An attacker can exhaust the client's CPU by sending specially crafted IMAP responses containing many string literals, leading to significant performance degradation in...

Improper Enforcement of Behavioral Workflow

Overview Affected versions of this package are vulnerable to Improper Enforcement of Behavioral Workflow via the starttls function. An attacker can intercept and manipulate the communication by injecting a crafted response before the client completes sending the command, causing the connection to...

GHSA-VCGP-9326-PQCP net-imap vulnerable to STARTTLS stripping via invalid response timing

Summary A man-in-the-middle attacker can cause Net::IMAPstarttls to return "successfully", without starting TLS. Details When using Net::IMAPstarttls to upgrade a plaintext connection to use TLS, a man-in-the-middle attacker can inject a tagged OK response with an easily predictable tag. By sendi...

net-imap vulnerable to command Injection via unvalidated Symbol inputs

Summary Symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. Details Symbol arguments represent IMAP "system flags", which are formatted as "atoms" with no quoting with a "" prefix. Vulnerable versions of Net::IMAP...

PT-2026-37050

Name of the Vulnerable Software and Affected Versions Net::IMAP versions prior to 0.4.24 Net::IMAP versions prior to 0.5.14 Net::IMAP versions prior to 0.6.4 Description Symbol arguments passed to IMAP commands are susceptible to CRLF Injection and IMAP Command injection. Symbol arguments represe...

MiracleLinux 9 : ruby:3.3 (AXSA:2025-9954:01)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-9954:01 advisory. net-imap: Net::IMAP vulnerable to possible DoS by memory exhaustion CVE-2025-25186 CGI: Denial of Service in CGI::Cookie.parse CVE-2025-27219 uri:...

MiracleLinux 8 : ruby:3.3 (AXSA:2025-10474:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-10474:01 advisory. net-imap: Net::IMAP vulnerable to possible DoS by memory exhaustion CVE-2025-25186 CGI: Denial of Service in CGI::Cookie.parse CVE-2025-27219 uri:...

net-imap rubygem vulnerable to possible DoS by memory exhaustion

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TencentOS Server 4: ruby (TSSA-2025:0467)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0467 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities...