CVE-2020-26939
mediumPriorität · verfolgen · 21EPSS 0.009 · 60. PerzentilEUFRUSEPSS · bewertet 2026-10-27
In Legion of the Bouncy Castle BC before 1.61 and BC-FJA before 1.0.1.2, attackers can obtain sensitive information about a private exponent because of Observable Differences in Behavior to Error Inputs. This occurs in org.bouncycastle.crypto.encodings.OAEPEncoding. Sending invalid ciphertext that decrypts to a short payload in the OAEP Decoder could result in the throwing of an early exception, potentially leaking some information about the private exponent of the RSA private key performing the encryption.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (11)
Betroffene Produkte und Versionsbereiche.
- bouncycastle legion-of-the-bouncy-castle< 1.61nvdUScpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle:*:*:*:*:*:*:*:*
Advisories (2)
Hersteller- und Ökosystem-Meldungen dazu.
- GHSA-72m5-fvvv-55m6Observable Differences in Behavior to Error Inputs in Bouncy Castle2021-04-22ghsa · osvUS
In Legion of the Bouncy Castle BC before 1.55 and BC-FJA before 1.0.2, attackers can obtain sensitive information about a private exponent because of Observable Differences in Behavior to Error Inputs. This occurs in org.bouncycastle.crypto.encodings.OAEPEncoding. Sending invalid ciphertext that decrypts to a short payload in the OAEP Decoder could result in the throwing of an early exception, potentially leaking some information about the private exponent of the RSA private key performing the encryption.
- CERTFR-2026-AVI-1336Multiples vulnérabilités dans les produits IBMFrançais2026-10-16vendor · certfrFR
auch bekannt als (3)
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quellen
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Referenzen (19)
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/bcgit/bc-java/commit/930f8b274c4f1f3a46e68b5441f1e7fadb57e8c1cnnvd
- https://github.com/bcgit/bc-java/wiki/CVE-2020-26939cnnvd
- https://lists.apache.org/thread.html/r8c36ba34e80e05eecb1f80071cc834d705616f315b634ec0c7d8f42e%40%3Cissues.solr.apache.org%3Ecnnvd
- https://lists.apache.org/thread.html/r8c36ba34e80e05eecb1f80071cc834d705616f315b634ec0c7d8f42e@%3Cissues.solr.apache.org%3Ecnnvd
- https://lists.debian.org/debian-lts-announce/2020/11/msg00007.htmlcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-26939cnnvd
- https://security.netapp.com/advisory/ntap-20201202-0005/cnnvd
- https://vigilance.fr/vulnerability/Bouncy-Castle-information-disclosure-via-OAEPEncoding-Observable-Differences-33769cnnvd
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