Multiple vulnerabilities in Red Hat OpenStack 16.1 packages
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-11078 CVE-2021-21240 |
| CWE-ID | CWE-93 CWE-400 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Red Hat OpenStack Server applications / Other server solutions python-httplib2 (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) CRLF injection
EUVDB-ID: #VU28245
Risk: Low
CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2020-11078
CWE-ID:
CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform CRLF injection attacks.
The vulnerability exists due to insufficient filtration of user-supplied data. A remote attacker controlling unescaped part of uri for "httplib2.Http.request()" can change request headers and body, send additional hidden requests to same server.
MitigationInstall updates from vendor's website.
Red Hat OpenStack: before 16.1.6
python-httplib2 (Red Hat package): before 0.13.1-2.el8ost
CPE2.3- cpe:2.3:a:red_hat:red_hat_openstack:*:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:python-httplib2_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2021:2116
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) Resource exhaustion
EUVDB-ID: #VU50989
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-2021-21240
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. A remote attacker can trigger resource exhaustion by tricking the application to connect to a malicious server that responds with long series of "xa0" characters in the "www-authenticate" header.
MitigationInstall updates from vendor's website.
Red Hat OpenStack: before 16.1.6
python-httplib2 (Red Hat package): before 0.13.1-2.el8ost
CPE2.3- cpe:2.3:a:red_hat:red_hat_openstack:*:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:python-httplib2_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2021:2116
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.
