Vulnerabilities

Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted data sent after a rejection during DATA processing.

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory.

Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.

Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.

Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled.

Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosure of uninitialized stack memory values to a client.

Exim before 4.99.3, in certain GnuTLS configurations, has a remotely reachable use-after-free in the BDAT body parsing path.

In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can be an out-of-bounds write that crashes the connection instance, or erroneous data processing that divulges dat…

In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present (malformed UTF-8 header data).

In Exim before 4.99.2, when JSON lookup is enabled, an out-of-bounds heap write can occur when a JSON operator encounters malformed JSON in an untrusted header, because of an incorrect implementation of \ skipping.

In Exim before 4.99.2, on systems using musl libc (not glibc), an attacker can crash the connection instance when malformed DNS data is present in PTR records.

Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.

A use-after-free in Exim 4.96 through 4.98.1 could allow users (with command-line access) to escalate privileges.

Exim 4.98 before 4.98.1, when SQLite hints and ETRN serialization are used, allows remote SQL injection.

Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mai…

Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability.

Exim libspf2 Integer Underflow Remote Code Execution Vulnerability.

Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability.

Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability.

Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability.

Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability.

Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations.

A vulnerability was found in Exim and classified as problematic.

A vulnerability was found in Exim and classified as problematic.