{"id":"CVE-2024-0553","title":"A vulnerability was found in GnuTLS","summary":"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 perfo…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-203"],"vendor":"gnu","product":"gnutls","affected":["gnutls < 3.8.3","fedora = 39","enterprise_linux = 8.0","enterprise_linux = 9.0"],"patched":["gnutls 3.8.3"],"published":"2024-01-16","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:17:17.377","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-0553","references":[{"url":"https://access.redhat.com/errata/RHSA-2024:0533","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:0627","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:0796","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:1082","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:1108","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:1383","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:2094","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2024-0553","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2258412","label":"secalert@redhat.com"},{"url":"https://gitlab.com/gnutls/gnutls/-/issues/1522","label":"secalert@redhat.com"},{"url":"https://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.html","label":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2024/01/19/3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:0533","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:0627","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:0796","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:1082","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:1108","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:1383","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:2094","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/security/cve/CVE-2024-0553","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2258412","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitlab.com/gnutls/gnutls/-/issues/1522","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/02/msg00010.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7ZEIOLORQ7N6WRPFXZSYDL2MC4LP7VFV/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNXKVR5YNUEBNHAHM5GSYKBZX4W2HMN2/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20240202-0011/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.01614,"epssPercentile":0.75502,"ingestedAt":"2026-10-15T03:30:12.634Z","ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2024-01-16T15:03:37.625694Z"},"slug":"CVE-2024-0553","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `gnutls < 3.8.3`\n- `fedora = 39`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `gnutls 3.8.3`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}