CVE-2020-26939
MEDIUM5.3EPSS 2.4%Observable Differences in Behavior to Error Inputs in Bouncy Castle
發布日:2021/4/22修改日:2025/7/17
描述
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.
受影響套件(10)
- Debian/bouncycastlefrom 0, < 1.56-1+deb9u3
- Debian/bouncycastlefrom 0, < 1.61-1
- Maven/org.bouncycastle:bc-fipsfrom 0, < 1.0.2
- Maven/org.bouncycastle:bcprov-ext-jdk15onfrom 0, < 1.61
- Maven/org.bouncycastle:bcprov-ext-jdk16from 0, < 1.61
- Maven/org.bouncycastle:bcprov-jdk14from 0, < 1.61
- Maven/org.bouncycastle:bcprov-jdk15from 0, < 1.61
- Maven/org.bouncycastle:bcprov-jdk15onfrom 0, < 1.61
- Maven/org.bouncycastle:bcprov-jdk15to18from 0, < 1.61
- Maven/org.bouncycastle:bcprov-jdk16from 0, < 1.61
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
參考連結(8)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-26939
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-26939
- WEBhttps://github.com/bcgit/bc-java/commit/930f8b274c4f1f3a46e68b5441f1e7fadb57e8c1
- WEBhttps://github.com/bcgit/bc-java/wiki/CVE-2020-26939
- WEBhttps://lists.apache.org/thread.html/r8c36ba34e80e05eecb1f80071cc834d705616f315b634ec0c7d8f42e@%3Cissues.solr.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/r8c36ba34e80e05eecb1f80071cc834d705616f315b634ec0c7d8f42e%40%3Cissues.solr.apache.org%3E
- WEBhttps://lists.debian.org/debian-lts-announce/2020/11/msg00007.html
- WEBhttps://security.netapp.com/advisory/ntap-20201202-0005