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exim vulnerabilities and exploits
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9.8
CVSSv3
CVE-2020-28024
Exim 4 prior to 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF.
Exim Exim
7.5
CVSSv3
CVE-2020-28025
Exim 4 prior to 4.94.2 allows Out-of-bounds Read because pdkim_finish_bodyhash does not validate the relationship between sig->bodyhash.len and b->bh.len; thus, a crafted DKIM-Signature header might lead to a leak of sensitive information from process memory.
Exim Exim
9.8
CVSSv3
CVE-2020-28026
Exim 4 prior to 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable Delivery Status Notification (DSN). Certain uses of ORCPT= can place a newline into a spool header file, and indirectly allow unauthenticated remote malicious...
Exim Exim
2 Github repositories
6.3
CVSSv3
CVE-2021-27216
Exim 4 prior to 4.94.2 has Execution with Unnecessary Privileges. By leveraging a delete_pid_file race condition, a local user can delete arbitrary files as root. This involves the -oP and -oPX options.
Exim Exim
7.8
CVSSv3
CVE-2020-28007
Exim 4 prior to 4.94.2 allows Execution with Unnecessary Privileges. Because Exim operates as root in the log directory (owned by a non-root user), a symlink or hard link attack allows overwriting critical root-owned files anywhere on the filesystem.
Exim Exim
7.8
CVSSv3
CVE-2020-28011
Exim 4 prior to 4.94.2 allows Heap-based Buffer Overflow in queue_run via two sender options: -R and -S. This may cause privilege escalation from exim to root.
Exim Exim
7.8
CVSSv3
CVE-2020-28012
Exim 4 prior to 4.94.2 allows Exposure of File Descriptor to Unintended Control Sphere because rda_interpret uses a privileged pipe that lacks a close-on-exec flag.
Exim Exim
7.8
CVSSv3
CVE-2020-28013
Exim 4 prior to 4.94.2 allows Heap-based Buffer Overflow because it mishandles "-F '.('" on the command line, and thus may allow privilege escalation from any user to root. This occurs because of the interpretation of negative sizes in strncpy.
Exim Exim
6.1
CVSSv3
CVE-2020-28014
Exim 4 prior to 4.94.2 allows Execution with Unnecessary Privileges. The -oP option is available to the exim user, and allows a denial of service because root-owned files can be overwritten.
Exim Exim
7.8
CVSSv3
CVE-2020-28015
Exim 4 prior to 4.94.2 has Improper Neutralization of Line Delimiters. Local users can alter the behavior of root processes because a recipient address can have a newline character.
Exim Exim
CVSSv3
CVSSv2
CVSSv3
VMScore
Recommendations:
blind SQL injection
SSRF
buffer overflow
CVE-2023-28952
CVE-2023-41822
CVE-2024-27956
CVE-2023-7028
CVE-2024-34447
CVE-2024-34460
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