| CVE | Package | Version | Description |
|---|---|---|---|
| CVE-2023-2283 | libssh | 0.9.3-2ubuntu2.2 | A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK. |
| CVE-2023-1667 | libssh | 0.9.3-2ubuntu2.2 | A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may allow an authenticated client to cause a denial of service. |
| CVE-2020-11080 | nghttp2 | 1.40.0-1build1 | In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection. |
| CVE-2023-31484 | perl | 5.30.0-9ubuntu0.3 | CPAN.pm before 2.35 does not verify TLS certificates when downloading distributions over HTTPS. |
| CVE | Package | Version | Description |
|---|---|---|---|
| CVE-2016-2781 | coreutils | 8.30-3ubuntu2 | chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer. |
| CVE-2013-4235 | shadow | 1:4.8.1-1ubuntu5.20.04.4 | shadow: TOCTOU (time-of-check time-of-use) race condition when copying and removing directory trees |
| CVE-2023-29383 | shadow | 1:4.8.1-1ubuntu5.20.04.4 | In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that "cat /etc/passwd" shows a rogue user account. |
| CVE-2022-3219 | gnupg2 | 2.2.19-3ubuntu2.2 | GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB. |
| CVE-2023-26604 | systemd | 245.4-4ubuntu3.21 | systemd before 247 does not adequately block local privilege escalation for some Sudo configurations, e.g., plausible sudoers files in which the "systemctl status" command may be executed. Specifically, systemd does not set LESSSECURE to 1, and thus other programs may be launched from the less program. This presents a substantial security risk when running systemctl from Sudo, because less executes as root when the terminal size is too small to show the complete systemctl output. |
| CVE-2023-28321 | curl | 7.68.0-1ubuntu2.18 | An improper certificate validation vulnerability exists in curl |
| CVE-2023-28322 | curl | 7.68.0-1ubuntu2.18 | An information disclosure vulnerability exists in curl |
| CVE-2023-2953 | openldap | 2.4.49+dfsg-2ubuntu1.9 | A vulnerability was found in openldap. This security flaw causes a null pointer dereference in ber_memalloc_x() function. |
| CVE | Package | Version | Description |
|---|---|---|---|
| CVE-2017-11164 | pcre3 | 2:8.39-12ubuntu0.1 | In PCRE 8.41, the OP_KETRMAX feature in the match function in pcre_exec.c allows stack exhaustion (uncontrolled recursion) when processing a crafted regular expression. |
| CVE-2016-20013 | glibc | 2.31-0ubuntu9.9 | sha256crypt and sha512crypt through 0.6 allow attackers to cause a denial of service (CPU consumption) because the algorithm's runtime is proportional to the square of the length of the password. |