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Huawei EulerOS: Security Advisory for freeradius (EulerOS-SA-2020-2133)

Information

Severity

Severity

Medium

Family

Family

Huawei EulerOS Local Security Checks

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

3 years ago

Modified

Modified

3 years ago

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).

Common Vulnerabilities and Exposures (CVE)