openEuler 20.03 LTS update for nss



Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2019-17006
CVE-2019-17007
CVE-2019-11756
CVE-2020-12402
CWE-ID CWE-122
CWE-20
CWE-416
CWE-310
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openEuler
Operating systems & Components / Operating system

nss-debuginfo
Operating systems & Components / Operating system package or component

nss-debugsource
Operating systems & Components / Operating system package or component

nss-devel
Operating systems & Components / Operating system package or component

nss-util
Operating systems & Components / Operating system package or component

nss-softokn
Operating systems & Components / Operating system package or component

nss-util-devel
Operating systems & Components / Operating system package or component

nss-softokn-devel
Operating systems & Components / Operating system package or component

nss
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU47197

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-17006

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Mozilla NSS library when processing input text length while using certain cryptographic primitives. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

nss-debuginfo: before 3.54.0-2

nss-debugsource: before 3.54.0-2

nss-devel: before 3.54.0-2

nss-util: before 3.54.0-2

nss-softokn: before 3.54.0-2

nss-util-devel: before 3.54.0-2

nss-softokn-devel: before 3.54.0-2

nss: before 3.54.0-2

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1059


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU23467

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-17007

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the collect_certs() function in /lib/pkcs7/certread.c in Mozilla NSS library. A remote attacker can supply a specially crafted certificate to the application and perform a denial of service attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

nss-debuginfo: before 3.54.0-2

nss-debugsource: before 3.54.0-2

nss-devel: before 3.54.0-2

nss-util: before 3.54.0-2

nss-softokn: before 3.54.0-2

nss-util-devel: before 3.54.0-2

nss-softokn-devel: before 3.54.0-2

nss: before 3.54.0-2

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1059


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Use-after-free

EUVDB-ID: #VU23369

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-11756

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing SFTKSession object. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a use-after-free error and crash the application or execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

nss-debuginfo: before 3.54.0-2

nss-debugsource: before 3.54.0-2

nss-devel: before 3.54.0-2

nss-util: before 3.54.0-2

nss-softokn: before 3.54.0-2

nss-util-devel: before 3.54.0-2

nss-softokn-devel: before 3.54.0-2

nss: before 3.54.0-2

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1059


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Cryptographic issues

EUVDB-ID: #VU29460

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-12402

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to recover the secret primes.

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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

nss-debuginfo: before 3.54.0-2

nss-debugsource: before 3.54.0-2

nss-devel: before 3.54.0-2

nss-util: before 3.54.0-2

nss-softokn: before 3.54.0-2

nss-util-devel: before 3.54.0-2

nss-softokn-devel: before 3.54.0-2

nss: before 3.54.0-2

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1059


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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