# CVE-2024-0553: Gnutls: incomplete fix for cve-2023-5981 > A timing side-channel in GnuTLS RSA-PSK key exchange allows remote attackers to leak sensitive data via response time analysis. - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 16 Jan 2024 - **Updated:** 15 Oct 2026 - **Also known as:** ALPINE-CVE-2024-0553, AZL-33341, AZL-34739, BELL-CVE-2024-0553, DEBIAN-CVE-2024-0553, DLA-3740-1, GHSA-x697-v25m-6phv, JLSEC-2026-525, OESA-2024-1091, OESA-2024-1092, RHSA-2024:0627, RHSA-2024:0796, RHSA-2024:1108, RLSA-2024:0627, UBUNTU-CVE-2024-0553 ## What is CVE-2024-0553? CVE-2024-0553 is a high-severity vulnerability in Fedoraproject Fedora, published on 16 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description A vulnerability was found in GnuTLS. The response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from the response times of ciphertexts with correct PKCS#1 v1.5 padding. This issue may allow a remote attacker to perform a timing side-channel attack in the RSA-PSK key exchange, potentially leading to the leakage of sensitive data. CVE-2024-0553 is designated as an incomplete resolution for CVE-2023-5981. Weakness: CWE-203 (Observable Discrepancy) ## Which versions are affected by CVE-2024-0553? It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `gnutls-c++` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-c++-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-dane` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-dane-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-devel` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-utils` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-utils-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-c++-debuginfo` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-dane-debuginfo` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-debuginfo` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-debugsource` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-utils-debuginfo` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.6.16-8.el8_9.1 | | `gnutls-c++` | Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-c++-debuginfo` | Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-dane` | Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-dane-debuginfo` | Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-debuginfo` | Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-debugsource` | Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-devel` | Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-utils` | Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-utils-debuginfo` | Red Hat:rhel_eus:8.6::appstream | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls` | Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-c++-debuginfo` | Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-dane-debuginfo` | Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-debuginfo` | Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-debugsource` | Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-utils-debuginfo` | Red Hat:rhel_eus:8.6::baseos | All versions | 0:3.6.16-5.el8_6.3 | | `gnutls-c++` | Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.2 | | `gnutls-c++-debuginfo` | Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.2 | | `gnutls-dane` | Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.2 | | `gnutls-dane-debuginfo` | Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.2 | | `gnutls-debuginfo` | Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.2 | | `gnutls-debugsource` | Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.2 | | `gnutls-devel` | Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.2 | | `gnutls-utils` | Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.2 | | `gnutls-utils-debuginfo` | Red Hat:rhel_eus:8.8::appstream | All versions | 0:3.6.16-7.el8_8.2 | | `gnutls` | Red Hat:rhel_eus:8.8::baseos | All versions | 0:3.6.16-7.el8_8.2 | Products: Fedoraproject Fedora, Gnu Gnutls, Redhat Enterprise Linux. ## How do I fix CVE-2024-0553? Apply the vendor's patch. ## Is CVE-2024-0553 being exploited? There is no known exploitation of CVE-2024-0553 in the wild and no public exploit code. ## Other vulnerabilities in Fedoraproject Fedora - [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild) - [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild) - [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild) - [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild) - [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2024-0553 and fix it if it is affected. What it is: CVE-2024-0553 is a high-severity vulnerability in Fedoraproject Fedora, published on 16 Jan 2024. 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-2024-0553 in the wild and no public exploit code. Affected product: Fedoraproject Fedora. 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-2024-0553/ (Markdown: https://insights.sbomify.com/CVE-2024-0553/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2024-0553 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-0553 - OSV: https://osv.dev/vulnerability/CVE-2024-0553 --- From sbomify Insights: https://insights.sbomify.com/CVE-2024-0553/ Summaries are generated and may contain mistakes; the official description above is the record.