CVE-2018-15836
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
In verify_signed_hash() in lib/liboswkeys/signatures.c in Openswan before 2.6.50.1, the RSA implementation does not verify the value of padding string during PKCS#1 v1.5 signature verification. Consequently, a remote attacker can forge signatures when small public exponents are being used. IKEv2 signature verification is affected when RAW RSA keys are used.
Overview
- CVE ID
- CVE-2018-15836
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2018-09-26T21:29:00
- Last Modified Date
- 2019-01-10T17:52:10
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:xelerance:openswan:*:*:*:*:*:*:*:* | 1 | OR | 2.6.50.1 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://lists.openswan.org/pipermail/users/2018-August/023761.html | Release Notes Vendor Advisory |
| https://github.com/xelerance/Openswan/commit/0b460be9e287fd335c8ce58129c67bf06065ef51 | Patch Vendor Advisory |
| https://github.com/xelerance/Openswan/commit/9eaa6c2a823c1d2b58913506a15f9474bf857a3d | Patch Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-15836 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15836 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:48:25 | Added to TrackCVE | |||
| 2022-12-03 12:35:46 | 2018-09-26T21:29Z | 2018-09-26T21:29:00 | CVE Published Date | updated |
| 2022-12-03 12:35:46 | 2019-01-10T17:52:10 | CVE Modified Date | updated | |
| 2022-12-03 12:35:46 | Analyzed | Vulnerability Status | updated |