SynopsisThe remote NewStart CGSL host is affected by multiple vulnerabilities.
DescriptionThe remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has nss packages installed that are affected by multiple vulnerabilities:
- When importing a curve25519 private key in PKCS#8format with leading 0x00 bytes, it is possible to trigger an out-of-bounds read in the Network Security Services (NSS) library. This could lead to information disclosure. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
- A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with PKCS#1 v1.5 signatures when those are the only ones advertised by server in CertificateRequest in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages. This vulnerability affects Firefox < 68. (CVE-2019-11727)
- Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71. (CVE-2019-11756)
- In Network Security Services (NSS) before 3.46, several cryptographic primitives had missing length checks. In cases where the application calling the library did not perform a sanity check on the inputs it could result in a crash due to a buffer overflow. (CVE-2019-17006)
- After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72. (CVE-2019-17023)
- When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox < 80 and Firefox for Android < 80. (CVE-2020-12400)
- During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time scalar multiplication was removed, resulting in variable-time execution dependent on secret data. This vulnerability affects Firefox < 80 and Firefox for Android < 80. (CVE-2020-12401)
- During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes.
*Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78. (CVE-2020-12402)
- A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS in versions before 3.55. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from this vulnerability is to confidentiality and system availability. (CVE-2020-12403)
- When performing EC scalar point multiplication, the wNAF point multiplication algorithm was used; which leaked partial information about the nonce used during signature generation. Given an electro-magnetic trace of a few signature generations, the private key could have been computed. This vulnerability affects Firefox < 80 and Firefox for Android < 80. (CVE-2020-6829)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
SolutionUpgrade the vulnerable CGSL nss packages. Note that updated packages may not be available yet. Please contact ZTE for more information.
File Name: newstart_cgsl_NS-SA-2021-0156_nss.nasl
Temporal Vector: E:U/RL:OF/RC:C
Temporal Vector: E:U/RL:O/RC:C
CPE: p-cpe:/a:zte:cgsl_core:nss, p-cpe:/a:zte:cgsl_core:nss-devel, p-cpe:/a:zte:cgsl_core:nss-pkcs11-devel, p-cpe:/a:zte:cgsl_core:nss-sysinit, p-cpe:/a:zte:cgsl_core:nss-tools, p-cpe:/a:zte:cgsl_main:nss, p-cpe:/a:zte:cgsl_main:nss-devel, p-cpe:/a:zte:cgsl_main:nss-pkcs11-devel, p-cpe:/a:zte:cgsl_main:nss-sysinit, p-cpe:/a:zte:cgsl_main:nss-tools, cpe:/o:zte:cgsl_core:5, cpe:/o:zte:cgsl_main:5
Required KB Items: Host/local_checks_enabled, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 9/24/2021
Vulnerability Publication Date: 7/9/2019
CVE: CVE-2019-11719, CVE-2019-11727, CVE-2019-11756, CVE-2019-17006, CVE-2019-17023, CVE-2020-6829, CVE-2020-12400, CVE-2020-12401, CVE-2020-12402, CVE-2020-12403
IAVA: 2019-A-0231-S, 2019-A-0438-S, 2020-A-0002-S, 2020-A-0391-S, 2020-A-0287-S