VDB
CVE-2020-26939
CVE-2020-26939
PUBLISHED
CVSS 5.300000190734863 MEDIUM
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.
EPSS 0.93% · 60.3th percentile
Risk Scores
CVSS 3.1
5.300000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score
0.93%
60.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | bouncycastle | 0, 1.49+dfsg-3ubuntu1, 1.51-4ubuntu1 |
| Ubuntu:18.04:LTS | bouncycastle | 0, 1.58-1, 1.57-1 |
Timeline
- Nov 2, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- May 29, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Oct 28, 2021 EPSS Score
- Dec 31, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 4, 2022 EPSS Score
- May 7, 2022 EPSS Score
- Jul 9, 2022 EPSS Score
- Nov 14, 2022 EPSS Score
- Jan 16, 2023 EPSS Score