Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2021-23840 | First vendor Publication | 2021-02-16 |
| Vendor | Cve | Last vendor Modification | 2024-11-21 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 7.5 | ||
| Base Score | 7.5 | Environmental Score | 7.5 |
| impact SubScore | 3.6 | Temporal Score | 7.5 |
| Exploitabality Sub Score | 3.9 | ||
| Attack Vector | Network | Attack Complexity | Low |
| Privileges Required | None | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | None |
| Integrity Impact | None | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 5 | Attack Range | Network |
| Cvss Impact Score | 2.9 | Attack Complexity | Low |
| Cvss Expoit Score | 10 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x). |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23840 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-190 | Integer Overflow or Wraparound (CWE/SANS Top 25) |
CPE : Common Platform Enumeration
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2024-11-28 13:53:26 |
|
| 2024-08-02 13:22:47 |
|
| 2024-08-02 01:24:46 |
|
| 2024-06-22 00:27:44 |
|
| 2024-02-02 02:23:07 |
|
| 2024-02-01 12:23:07 |
|
| 2023-11-07 21:35:41 |
|
| 2023-09-05 13:17:24 |
|
| 2023-09-05 01:22:40 |
|
| 2023-09-02 13:16:05 |
|
| 2023-09-02 01:23:00 |
|
| 2023-08-12 13:22:04 |
|
| 2023-08-12 01:22:13 |
|
| 2023-08-11 13:14:30 |
|
| 2023-08-11 01:22:55 |
|
| 2023-08-09 02:03:33 |
|
| 2023-08-06 13:12:33 |
|
| 2023-08-06 01:21:57 |
|
| 2023-08-04 13:12:56 |
|
| 2023-08-04 01:22:18 |
|
| 2023-07-14 13:12:57 |
|
| 2023-07-14 01:22:07 |
|
| 2023-03-29 02:15:16 |
|
| 2023-03-28 12:22:22 |
|
| 2022-10-11 13:05:11 |
|
| 2022-10-11 01:21:54 |
|
| 2022-08-30 02:11:14 |
|
| 2022-08-30 00:27:29 |
|
| 2022-05-12 21:23:15 |
|
| 2022-04-23 09:23:20 |
|
| 2022-04-20 09:23:22 |
|
| 2022-04-06 01:53:46 |
|
| 2022-04-04 17:23:10 |
|
| 2022-04-01 01:53:42 |
|
| 2022-03-10 21:23:24 |
|
| 2022-02-21 01:52:55 |
|
| 2022-02-15 00:23:23 |
|
| 2022-02-14 21:22:35 |
|
| 2022-02-07 21:23:18 |
|
| 2022-02-03 12:52:14 |
|
| 2021-12-10 21:23:25 |
|
| 2021-10-22 13:23:17 |
|
| 2021-10-20 17:23:16 |
|
| 2021-09-14 00:23:06 |
|
| 2021-08-05 01:42:17 |
|
| 2021-07-21 05:23:01 |
|
| 2021-07-15 05:23:01 |
|
| 2021-06-29 21:23:19 |
|
| 2021-06-28 21:23:15 |
|
| 2021-06-17 21:23:32 |
|
| 2021-06-15 00:23:04 |
|
| 2021-06-03 00:23:01 |
|
| 2021-05-12 05:22:56 |
|
| 2021-05-04 14:08:22 |
|
| 2021-04-22 03:13:41 |
|
| 2021-03-31 21:23:19 |
|
| 2021-03-26 12:38:11 |
|
| 2021-02-19 17:22:57 |
|
| 2021-02-18 21:23:34 |
|
| 2021-02-16 21:23:27 |
|
