CVE-2018-15836
Openswan RSA Padding Forgery Vulnerability
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.
INFO
Published Date :
Sept. 26, 2018, 9:29 p.m.
Last Modified :
Jan. 10, 2019, 5:52 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-15836.
| URL | Resource |
|---|---|
| https://github.com/xelerance/Openswan/commit/0b460be9e287fd335c8ce58129c67bf06065ef51 | Patch Vendor Advisory |
| https://github.com/xelerance/Openswan/commit/9eaa6c2a823c1d2b58913506a15f9474bf857a3d | Patch Vendor Advisory |
| https://lists.openswan.org/pipermail/users/2018-August/023761.html | Release Notes Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-15836 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-15836 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jan. 10, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://github.com/xelerance/Openswan/commit/0b460be9e287fd335c8ce58129c67bf06065ef51 No Types Assigned https://github.com/xelerance/Openswan/commit/0b460be9e287fd335c8ce58129c67bf06065ef51 Patch, Vendor Advisory Changed Reference Type https://github.com/xelerance/Openswan/commit/9eaa6c2a823c1d2b58913506a15f9474bf857a3d No Types Assigned https://github.com/xelerance/Openswan/commit/9eaa6c2a823c1d2b58913506a15f9474bf857a3d Patch, Vendor Advisory Changed Reference Type https://lists.openswan.org/pipermail/users/2018-August/023761.html No Types Assigned https://lists.openswan.org/pipermail/users/2018-August/023761.html Release Notes, Vendor Advisory Added CWE CWE-347 Added CPE Configuration OR *cpe:2.3:a:xelerance:openswan:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.50.1 -
CVE Modified by [email protected]
Sep. 28, 2018
Action Type Old Value New Value Changed Description In Openswan before 2.6.50.1, IKEv2 signature verification is vulnerable to "Variants of Bleichenbacher's Low-Exponent Attack on PKCS#1 RSA Signatures" attacks when RAW RSA keys are used. 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. Added Reference https://github.com/xelerance/Openswan/commit/9eaa6c2a823c1d2b58913506a15f9474bf857a3d [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-15836 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-15836
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.27 }} -0.11%
score
0.67590
percentile