CVE-2023-5981 Gnutls: timing side-channel in the rsa-psk authentication
Medium 5.9
Published
Updated
Check this codebase for CVE-2023-5981 and fix it if it is affected.
What it is: CVE-2023-5981 is a medium-severity vulnerability in Debian Debian Linux, published on 28 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-5981 in the wild and no public exploit code.
Affected product: Debian Debian Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2023-5981/ (Markdown: https://insights.sbomify.com/CVE-2023-5981/index.md)
Attackers can exploit timing differences in RSA-PSK authentication to potentially recover sensitive information via side-channel analysis.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-5981?
CVE-2023-5981 is a medium-severity vulnerability in Debian Debian Linux, published on 28 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2023-5981?
It affects 4 products.
Linux distribution packages (40)
gnutls AlmaLinux:8 | All versions | 3.6.16-8.el8_9 |
gnutls-c++ AlmaLinux:8 | All versions | 3.6.16-8.el8_9 |
gnutls-dane AlmaLinux:8 | All versions | 3.6.16-8.el8_9 |
gnutls-devel AlmaLinux:8 | All versions | 3.6.16-8.el8_9 |
gnutls-utils AlmaLinux:8 | All versions | 3.6.16-8.el8_9 |
gnutls-c++ Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9 |
gnutls-c++-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9 |
gnutls-dane Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9 |
gnutls-dane-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9 |
gnutls-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9 |
gnutls-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9 |
gnutls-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9 |
gnutls-utils Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9 |
gnutls-utils-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9 |
gnutls Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9 |
gnutls-c++-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9 |
gnutls-dane-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9 |
gnutls-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9 |
gnutls-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9 |
gnutls-utils-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9 |
gnutls-c++ Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-c++-debuginfo Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-dane Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-dane-debuginfo Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-debuginfo Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-debugsource Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-devel Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-utils Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-utils-debuginfo Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.2 |
gnutls Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-c++-debuginfo Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-dane-debuginfo Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-debuginfo Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-debugsource Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-utils-debuginfo Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.2 |
gnutls-c++ Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.1 |
gnutls-c++-debuginfo Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.1 |
gnutls-dane Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.1 |
gnutls-dane-debuginfo Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.1 |
gnutls-debuginfo Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.1 |
Products include Debian Debian Linux, Fedoraproject Fedora, Gnu Gnutls, Redhat Linux.
How do I fix CVE-2023-5981?
Apply the vendor's patch.
Is CVE-2023-5981 being exploited?
There is no known exploitation of CVE-2023-5981 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2023-5981, ALSA-2024:0155, AZL-32048, BELL-CVE-2023-5981, CLSA-2024-1707419801, DEBIAN-CVE-2023-5981 and 16 more.