CVE-2020-25829

An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).

References

Affected packages

Git / github.com/powerdns/pdns

Affected ranges

Type: GIT
Repo: https://github.com/powerdns/pdns
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

77409aab0be43071b365760213894d6388c3df30

Affected versions

auth-3.*

auth-3.1-rc1

auth-3.1-rc2

auth-3.1-rc3

auth-3.2-rc1

auth-3.2-rc2

auth-3.2-rc3

auth-3.2-rc4

auth-3.3

auth-3.3-rc1

auth-3.3-rc2

auth-3.4.0

auth-3.4.0-rc1

auth-3.4.0-rc2

auth-4.*

auth-4.0.0

auth-4.0.0-alpha1

auth-4.0.0-alpha2

auth-4.0.0-alpha3

auth-4.0.0-beta1

auth-4.0.0-rc1

auth-4.0.0-rc2

auth-4.0.1

auth-4.1.0

auth-4.1.0-rc1

auth-4.1.0-rc2

auth-4.1.0-rc3

dnsdist-1.*

dnsdist-1.0.0

dnsdist-1.0.0-alpha1

dnsdist-1.0.0-alpha2

dnsdist-1.0.0-beta1

dnsdist-1.1.0

dnsdist-1.1.0-beta1

dnsdist-1.1.0-beta2

dnsdist-1.2.0

Other

rec-3-0

rec-3-0-1

rec-3.*

rec-3.0

rec-3.0.1

rec-3.1.4

rec-3.3.1

rec-3.5

rec-3.5-rc1

rec-3.5-rc3

rec-3.5-rc4

rec-3.5-rc5

rec-3.6.0

rec-3.6.0-rc1

rec-3.7.0

rec-3.7.0-rc1

rec-3.7.0-rc2

rec-4.*

rec-4.0.0

rec-4.0.0-alpha1

rec-4.0.0-alpha2

rec-4.0.0-alpha3

rec-4.0.0-beta1

rec-4.0.0-rc1

rec-4.0.1

rec-4.0.2

rec-4.1.0

rec-4.1.0-alpha1

rec-4.1.0-rc1

rec-4.1.0-rc2

rec-4.1.0-rc3

rec-4.1.1

rec-4.1.10

rec-4.1.11

rec-4.1.12

rec-4.1.13

rec-4.1.14

rec-4.1.15

rec-4.1.16

rec-4.1.17

rec-4.1.2

rec-4.1.3

rec-4.1.4

rec-4.1.5

rec-4.1.6

rec-4.1.7

rec-4.1.8

rec-4.1.9

Database specific

{
    "vanir_signatures": [
        {
            "id": "CVE-2020-25829-ac387b1a",
            "signature_type": "Function",
            "target": {
                "file": "pdns/recursor_cache.cc",
                "function": "MemRecursorCache::updateValidationStatus"
            },
            "source": "https://github.com/powerdns/pdns/commit/77409aab0be43071b365760213894d6388c3df30",
            "digest": {
                "function_hash": "77679631441445527983920042920211549080",
                "length": 729.0
            },
            "deprecated": false,
            "signature_version": "v1"
        },
        {
            "id": "CVE-2020-25829-e5cd83e1",
            "signature_type": "Line",
            "target": {
                "file": "pdns/recursor_cache.cc"
            },
            "source": "https://github.com/powerdns/pdns/commit/77409aab0be43071b365760213894d6388c3df30",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "47417538831777855470350430050715081350",
                    "148055263521903558314326114750883219758",
                    "35080228024880871007699290772856527215",
                    "67316773013314591480806366431856137347",
                    "117026657073042240224421905896698093643",
                    "323213353731232169172399806756170124246",
                    "155500896485175737294500301755246166961",
                    "224196667708172987418133306458664934984",
                    "144653575526639387313445865962482611461",
                    "103108929300239247840240085865274340062",
                    "32309045751000532166148983162358670769",
                    "252546257047801208426498952786257063949"
                ]
            },
            "deprecated": false,
            "signature_version": "v1"
        }
    ]
}