{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2023-36811","title":"Title"},{"category":"description","text":"borgbackup is an opensource, deduplicating archiver with compression and authenticated encryption. A flaw in the cryptographic authentication scheme in borgbackup allowed an attacker to fake archives and potentially indirectly cause backup data loss in the repository. The attack requires an attacker to be able to: 1. insert files (with no additional headers) into backups and 2. gain write access to the repository. This vulnerability does not disclose plaintext to the attacker, nor does it affect the authenticity of existing archives. Creating plausible fake archives may be feasible for empty or small archives, but is unlikely for large archives. The issue has been fixed in borgbackup 1.2.5. Users are advised to upgrade. Additionally to installing the fixed code, users must follow the upgrade procedure as documented in the change log. Data loss after being attacked can be avoided by reviewing the archives (timestamp and contents valid and as expected) after any \"borg check --repair\" and before \"borg prune\". There are no known workarounds for this vulnerability.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2023-36811","url":"https://www.suse.com/security/cve/CVE-2023-36811"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1214809 for CVE-2023-36811","url":"https://bugzilla.suse.com/1214809"}],"title":"SUSE CVE CVE-2023-36811","tracking":{"current_release_date":"2025-03-15T06:15:30Z","generator":{"date":"2023-09-01T02:08:06Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2023-36811","initial_release_date":"2023-09-01T02:08:06Z","revision_history":[{"date":"2023-09-01T02:08:06Z","number":"2","summary":"Current version"},{"date":"2023-10-13T00:25:19Z","number":"3","summary":"Current version"},{"date":"2025-01-01T02:01:38Z","number":"4","summary":"Current version"},{"date":"2025-02-14T06:21:42Z","number":"5","summary":"Current version"},{"date":"2025-02-16T06:14:51Z","number":"6","summary":"Current version"},{"date":"2025-03-15T06:15:30Z","number":"7","summary":"Current version"}],"status":"interim","version":"7"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"openSUSE Tumbleweed","product":{"name":"openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed","product_identification_helper":{"cpe":"cpe:/o:opensuse:tumbleweed"}}},{"category":"product_version","name":"borgbackup-1.2.6-1.1","product":{"name":"borgbackup-1.2.6-1.1","product_id":"borgbackup-1.2.6-1.1","product_identification_helper":{"cpe":"cpe:2.3:a:borg_project:borg:1.2.6:*:*:*:*:*:*:*","purl":"pkg:rpm/suse/borgbackup@1.2.6-1.1"}}},{"category":"product_version","name":"borgbackup-bash-completion-1.2.6-1.1","product":{"name":"borgbackup-bash-completion-1.2.6-1.1","product_id":"borgbackup-bash-completion-1.2.6-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/borgbackup-bash-completion@1.2.6-1.1"}}},{"category":"product_version","name":"borgbackup-doc-1.2.6-1.1","product":{"name":"borgbackup-doc-1.2.6-1.1","product_id":"borgbackup-doc-1.2.6-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/borgbackup-doc@1.2.6-1.1"}}},{"category":"product_version","name":"borgbackup-fish-completion-1.2.6-1.1","product":{"name":"borgbackup-fish-completion-1.2.6-1.1","product_id":"borgbackup-fish-completion-1.2.6-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/borgbackup-fish-completion@1.2.6-1.1"}}},{"category":"product_version","name":"borgbackup-zsh-completion-1.2.6-1.1","product":{"name":"borgbackup-zsh-completion-1.2.6-1.1","product_id":"borgbackup-zsh-completion-1.2.6-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/borgbackup-zsh-completion@1.2.6-1.1"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"borgbackup-1.2.6-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:borgbackup-1.2.6-1.1"},"product_reference":"borgbackup-1.2.6-1.1","relates_to_product_reference":"openSUSE Tumbleweed"},{"category":"default_component_of","full_product_name":{"name":"borgbackup-bash-completion-1.2.6-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:borgbackup-bash-completion-1.2.6-1.1"},"product_reference":"borgbackup-bash-completion-1.2.6-1.1","relates_to_product_reference":"openSUSE Tumbleweed"},{"category":"default_component_of","full_product_name":{"name":"borgbackup-doc-1.2.6-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:borgbackup-doc-1.2.6-1.1"},"product_reference":"borgbackup-doc-1.2.6-1.1","relates_to_product_reference":"openSUSE Tumbleweed"},{"category":"default_component_of","full_product_name":{"name":"borgbackup-fish-completion-1.2.6-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:borgbackup-fish-completion-1.2.6-1.1"},"product_reference":"borgbackup-fish-completion-1.2.6-1.1","relates_to_product_reference":"openSUSE Tumbleweed"},{"category":"default_component_of","full_product_name":{"name":"borgbackup-zsh-completion-1.2.6-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:borgbackup-zsh-completion-1.2.6-1.1"},"product_reference":"borgbackup-zsh-completion-1.2.6-1.1","relates_to_product_reference":"openSUSE Tumbleweed"}]},"vulnerabilities":[{"cve":"CVE-2023-36811","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2023-36811"}],"notes":[{"category":"general","text":"borgbackup is an opensource, deduplicating archiver with compression and authenticated encryption. A flaw in the cryptographic authentication scheme in borgbackup allowed an attacker to fake archives and potentially indirectly cause backup data loss in the repository. The attack requires an attacker to be able to: 1. insert files (with no additional headers) into backups and 2. gain write access to the repository. This vulnerability does not disclose plaintext to the attacker, nor does it affect the authenticity of existing archives. Creating plausible fake archives may be feasible for empty or small archives, but is unlikely for large archives. The issue has been fixed in borgbackup 1.2.5. Users are advised to upgrade. Additionally to installing the fixed code, users must follow the upgrade procedure as documented in the change log. Data loss after being attacked can be avoided by reviewing the archives (timestamp and contents valid and as expected) after any \"borg check --repair\" and before \"borg prune\". There are no known workarounds for this vulnerability.","title":"CVE description"}],"product_status":{"recommended":["openSUSE Tumbleweed:borgbackup-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-bash-completion-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-doc-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-fish-completion-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-zsh-completion-1.2.6-1.1"]},"references":[{"category":"external","summary":"CVE-2023-36811","url":"https://www.suse.com/security/cve/CVE-2023-36811"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1214809 for CVE-2023-36811","url":"https://bugzilla.suse.com/1214809"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["openSUSE Tumbleweed:borgbackup-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-bash-completion-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-doc-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-fish-completion-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-zsh-completion-1.2.6-1.1"]}],"scores":[{"cvss_v3":{"baseScore":4.7,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"products":["openSUSE Tumbleweed:borgbackup-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-bash-completion-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-doc-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-fish-completion-1.2.6-1.1","openSUSE Tumbleweed:borgbackup-zsh-completion-1.2.6-1.1"]}],"threats":[{"category":"impact","date":"2023-08-30T20:01:23Z","details":"moderate"}],"title":"CVE-2023-36811"}]}