openEuler update for lighttpd
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2022-37797 CVE-2022-41556 |
| CWE-ID | CWE-476 CWE-401 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
openEuler Operating systems & Components / Operating system lighttpd-filesystem Operating systems & Components / Operating system package or component lighttpd-mod_authn_mysql Operating systems & Components / Operating system package or component lighttpd-mod_authn_pam Operating systems & Components / Operating system package or component lighttpd-debugsource Operating systems & Components / Operating system package or component lighttpd-mod_authn_gssapi Operating systems & Components / Operating system package or component lighttpd-debuginfo Operating systems & Components / Operating system package or component lighttpd-mod_mysql_vhost Operating systems & Components / Operating system package or component lighttpd-fastcgi Operating systems & Components / Operating system package or component lighttpd Operating systems & Components / Operating system package or component |
| Vendor | openEuler |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) NULL pointer dereference
EUVDB-ID: #VU67731
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-37797
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the mod_wstunnel module when handling invalid HTTP requests. A remote attacker can send specially crafted HTTP requests to the affected web server and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1 - 22.03 LTS
lighttpd-filesystem: before 1.4.67-1
lighttpd-mod_authn_mysql: before 1.4.67-1
lighttpd-mod_authn_pam: before 1.4.67-1
lighttpd-debugsource: before 1.4.67-1
lighttpd-mod_authn_gssapi: before 1.4.67-1
lighttpd-debuginfo: before 1.4.67-1
lighttpd-mod_mysql_vhost: before 1.4.67-1
lighttpd-fastcgi: before 1.4.67-1
lighttpd: before 1.4.67-1
CPE2.3- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP3:*:*:*:*:*:*
- cpe:2.3:o:openeuler:openeuler:22.03:LTS:*:*:*:*:*:*
- cpe:2.3:a:openeuler:lighttpd-filesystem:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-mod_authn_mysql:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-mod_authn_pam:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-debugsource:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-mod_authn_gssapi:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-mod_mysql_vhost:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-fastcgi:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd:*:*:*:*:*:openeuler:*:*
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1989
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) Memory leak
EUVDB-ID: #VU67733
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-2022-41556
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak within the mod_fastcgi and mod_scgi modules when handling a large number of incorrect HTTP requests. A remote attacker can send multiple incorrect HTTP requests to the web server and perform denial of service attack.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1 - 22.03 LTS
lighttpd-filesystem: before 1.4.67-1
lighttpd-mod_authn_mysql: before 1.4.67-1
lighttpd-mod_authn_pam: before 1.4.67-1
lighttpd-debugsource: before 1.4.67-1
lighttpd-mod_authn_gssapi: before 1.4.67-1
lighttpd-debuginfo: before 1.4.67-1
lighttpd-mod_mysql_vhost: before 1.4.67-1
lighttpd-fastcgi: before 1.4.67-1
lighttpd: before 1.4.67-1
CPE2.3- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP3:*:*:*:*:*:*
- cpe:2.3:o:openeuler:openeuler:22.03:LTS:*:*:*:*:*:*
- cpe:2.3:a:openeuler:lighttpd-filesystem:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-mod_authn_mysql:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-mod_authn_pam:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-debugsource:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-mod_authn_gssapi:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-mod_mysql_vhost:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd-fastcgi:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:lighttpd:*:*:*:*:*:openeuler:*:*
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1989
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.
