CVE-2018-15836 Security feature bypass in n/a
Remote attackers can forge signatures in Openswan when using small public exponents and RAW RSA keys, bypassing authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-15836?
CVE-2018-15836 is a high-severity vulnerability in n/a, published on 26 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-347
Which versions are affected by CVE-2018-15836?
It affects 1 product.
Products include Xelerance Openswan.
How do I fix CVE-2018-15836?
No fix has been published for CVE-2018-15836 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-15836 being exploited?
There is no known exploitation of CVE-2018-15836 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-3qpc-4533-p5rr.