Openbsd : Security Vulnerabilities, CVEs, CVSS score >= 3
CVE-2020-7247
Known exploited
Public exploit
smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.
Max CVSS
10.0
EPSS Score
97.50%
Published
2020-01-29
Updated
2022-04-29
CISA KEV Added
2022-03-25
CVE-2019-19726
Public exploit
OpenBSD through 6.6 allows local users to escalate to root because a check for LD_LIBRARY_PATH in setuid programs can be defeated by setting a very small RLIMIT_DATA resource limit. When executing chpass or passwd (which are setuid root), _dl_setup_env in ld.so tries to strip LD_LIBRARY_PATH from the environment, but fails when it cannot allocate memory. Thus, the attacker is able to execute their own library code as root.
Max CVSS
7.8
EPSS Score
0.06%
Published
2019-12-12
Updated
2023-10-06
CVE-2018-15473
Public exploit
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.
Max CVSS
5.3
EPSS Score
2.36%
Published
2018-08-17
Updated
2023-02-23
CVE-2016-6210
Public exploit
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.
Max CVSS
5.9
EPSS Score
10.74%
Published
2017-02-13
Updated
2022-12-13
CVE-2003-0190
Public exploit
OpenSSH-portable (OpenSSH) 3.6.1p1 and earlier with PAM support enabled immediately sends an error message when a user does not exist, which allows remote attackers to determine valid usernames via a timing attack.
Max CVSS
5.0
EPSS Score
6.45%
Published
2003-05-12
Updated
2024-02-15
5 vulnerabilities found