SUSE update for netty
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2020-11612 CVE-2021-21290 CVE-2021-37136 CVE-2021-37137 |
| CWE-ID | CWE-400 CWE-312 CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
SUSE Manager Server Operating systems & Components / Operating system SUSE Linux Enterprise Module for SUSE Manager Server Operating systems & Components / Operating system netty Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Resource exhaustion
EUVDB-ID: #VU27513
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-11612
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources within ZlibDecoders in Netty while decoding a ZlibEncoded byte stream. A remote attacker can trigger resource exhaustion by passing an overly large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.
MitigationUpdate the affected package netty to the latest version.
Vulnerable software versionsSUSE Manager Server: 4.3
SUSE Linux Enterprise Module for SUSE Manager Server: 4.3
netty: before 4.1.44.Final-150400.3.3.2
External linkshttp://www.suse.com/support/update/announcement/2022/suse-su-20223760-1/
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) Cleartext storage of sensitive information
EUVDB-ID: #VU51835
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-21290
CWE-ID:
CWE-312 - Cleartext Storage of Sensitive Information
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to insecure usage of temporary files in AbstractDiskHttpData method in Netty. The application stores sensitive information in temporary file that has insecure permissions. A local user can view application's temporary file and gain access to potentially sensitive data.Mitigation
Update the affected package netty to the latest version.
Vulnerable software versionsSUSE Manager Server: 4.3
SUSE Linux Enterprise Module for SUSE Manager Server: 4.3
netty: before 4.1.44.Final-150400.3.3.2
External linkshttp://www.suse.com/support/update/announcement/2022/suse-su-20223760-1/
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Resource exhaustion
EUVDB-ID: #VU63127
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-37136
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources in Bzip2 decompression decoder function. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
MitigationUpdate the affected package netty to the latest version.
Vulnerable software versionsSUSE Manager Server: 4.3
SUSE Linux Enterprise Module for SUSE Manager Server: 4.3
netty: before 4.1.44.Final-150400.3.3.2
External linkshttp://www.suse.com/support/update/announcement/2022/suse-su-20223760-1/
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) Improper input validation
EUVDB-ID: #VU59924
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-37137
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the Content Acquisition System (Netty) component in Oracle Commerce Guided Search. A remote non-authenticated attacker can exploit this vulnerability to perform a denial of service (DoS) attack.
MitigationUpdate the affected package netty to the latest version.
Vulnerable software versionsSUSE Manager Server: 4.3
SUSE Linux Enterprise Module for SUSE Manager Server: 4.3
netty: before 4.1.44.Final-150400.3.3.2
External linkshttp://www.suse.com/support/update/announcement/2022/suse-su-20223760-1/
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.
