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Huawei EulerOS: Security Advisory for freeradius (EulerOS-SA-2020-2133)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the Huawei EulerOS 'freeradius' package(s) announced via the EulerOS-SA-2020-2133 advisory.
Insight
Insight
In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.(CVE-2019-17185) In FreeRADIUS 3.0 through 3.0.19, on average 1 in every 2048 EAP-pwd handshakes fails because the password element cannot be found within 10 iterations of the hunting and pecking loop. This leaks information that an attacker can use to recover the password of any user. This information leakage is similar to the 'Dragonblood' attack and CVE-2019-9494.(CVE-2019-13456)
Affected Software
Affected Software
'freeradius' package(s) on Huawei EulerOS V2.0SP3.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
Please install the updated package(s).