Security Vulnerabilities - CVEs Published In May 2021
Exim 4 before 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.
CVSS Score
7.8
EPSS Score
0.002
Published
2021-05-06
Exim 4 before 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.
CVSS Score
7.8
EPSS Score
0.002
Published
2021-05-06
Exim 4 before 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.
CVSS Score
7.8
EPSS Score
0.002
Published
2021-05-06
Exim 4 before 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.
CVSS Score
6.1
EPSS Score
0.002
Published
2021-05-06
Exim 4 before 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.
CVSS Score
7.8
EPSS Score
0.001
Published
2021-05-06
Exim 4 before 4.94.2 allows an off-by-two Out-of-bounds Write because "-F ''" is mishandled by parse_fix_phrase.
CVSS Score
7.8
EPSS Score
0.002
Published
2021-05-06
Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow in receive_add_recipient via an e-mail message with fifty million recipients. NOTE: remote exploitation may be difficult because of resource consumption.
CVSS Score
9.8
EPSS Score
0.038
Published
2021-05-06
Exim 4 before 4.94.2 allows Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.
CVSS Score
9.8
EPSS Score
0.64
Published
2021-05-06
Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA.
CVSS Score
7.5
EPSS Score
0.009
Published
2021-05-06
Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-length restriction.
CVSS Score
9.8
EPSS Score
0.203
Published
2021-05-06