CVE-2023-5981
Published: 17 November 2023
A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding.
Notes
Author | Note |
---|---|
ccdm94 | in order to backport the patch for this CVE for xenial and earlier it is necessary to also include the changes from commit 4804febdd, which is also the fix for CVE-2018-16868, due to the use of function 'gnutls_privkey_decrypt_data2' in the patch. However, to successfully add the fix for CVE-2018-16868 it is required that the patch for CVE-2018-16869 also be applied to nettle, which is not possible for xenial and earlier due to it being too intrusive. Therefore, it will not be possible to patch CVE-2023-5981 in xenial and earlier because it would also be considered too intrusive in this case. |
Priority
Status
Package | Release | Status |
---|---|---|
gnutls28 Launchpad, Ubuntu, Debian |
bionic |
Released
(3.5.18-1ubuntu1.6+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
focal |
Released
(3.6.13-2ubuntu1.9)
|
|
jammy |
Released
(3.7.3-4ubuntu1.3)
|
|
lunar |
Released
(3.7.8-5ubuntu1.1)
|
|
mantic |
Released
(3.8.1-4ubuntu1.1)
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Released
(3.8.2)
|
|
xenial |
Ignored
(change too intrusive)
|
|
Patches: upstream: https://gitlab.com/gnutls/gnutls/-/merge_requests/1787/diffs?commit_id=29d6298d0b04cfff970b993915db71ba3f580b6d |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.9 |
Attack vector | Network |
Attack complexity | High |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
References
- https://lists.gnupg.org/pipermail/gnutls-help/2023-November/004837.html
- https://gnutls.org/security-new.html#GNUTLS-SA-2023-10-23
- https://ubuntu.com/security/notices/USN-6499-1
- https://ubuntu.com/security/notices/USN-6499-2
- https://www.cve.org/CVERecord?id=CVE-2023-5981
- NVD
- Launchpad
- Debian