{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2008-1637 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2008-1637 is a medium-severity vulnerability in Powerdns Recursor, published on 2 Apr 2008. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2008-1637 and fix it if it is affected.\n\nWhat it is: CVE-2008-1637 is a medium-severity vulnerability in Powerdns Recursor, published on 2 Apr 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2008-1637 in the wild and no public exploit code.\n\nAffected product: Powerdns Recursor. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. 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.\n2. 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.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2008-1637/ (Markdown: https://insights.sbomify.com/CVE-2008-1637/index.md)","id":"CVE-2008-1637","markdown":"https://insights.sbomify.com/CVE-2008-1637/index.md","name":"CVE-2008-1637","record":{"aliases":["DEBIAN-CVE-2008-1637","DSA-1544-1","GHSA-c5qh-3289-h9w4"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"DNS recursor","requires_auth":"none","summary":"Remote attackers can poison the DNS cache due to insufficient randomness in transaction IDs and source ports, affecting PowerDNS Recursor users.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"recursor","vendor":"powerdns"}],"cvss":{"score":6.8,"severity":"medium","source":"nvd","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","version":"2.0"},"cwes":[{"id":"CWE-189","name":null}],"description":"PowerDNS Recursor before 3.1.5 uses insufficient randomness to calculate (1) TRXID values and (2) UDP source port numbers, which makes it easier for remote attackers to poison a DNS cache, related to (a) algorithmic deficiencies in rand and random functions in external libraries, (b) use of a 32-bit seed value, and (c) choice of the time of day as the sole seeding information.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Weak cryptography in n/a","id":"CVE-2008-1637","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"powerdns:recursor","products":["powerdns:recursor"],"type":"weak_cryptography","year":"2008"},"n_packages":0,"n_references":18,"next":{"headline":"Privilege escalation in n/a","id":"CVE-2008-1638"},"packages":[],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2008-1636"},"products":["n/a"],"published":"2008-04-02","related":[{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2009-4009","kev_date_added":null,"published":"2010-01-08"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2020-10030","kev_date_added":null,"published":"2020-05-19"},{"cvss_score":8.2,"headline":"Crafted delegations or IP fragments can poison cached delegations in Recursor","id":"CVE-2025-59023","kev_date_added":null,"published":"2026-02-09"},{"cvss_score":7.5,"headline":"Insufficient validation of incoming notifies over TCP can lead to a denial of service in Recursor","id":"CVE-2025-59030","kev_date_added":null,"published":"2025-12-09"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2023-22617","kev_date_added":null,"published":"2023-01-21"},{"cvss_score":7.5,"headline":"Memory corruption in pdns-recursor","id":"CVE-2018-16855","kev_date_added":null,"published":"2018-12-03"},{"cvss_score":7.5,"headline":"Other in n/a","id":"CVE-2009-4010","kev_date_added":null,"published":"2010-01-08"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-07","vendors":["n/a"]},"summary":"Remote attackers can poison the DNS cache due to insufficient randomness in transaction IDs and source ports, affecting PowerDNS Recursor users.","url":"https://insights.sbomify.com/CVE-2008-1637/"}