SUSE update for curl
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-22898 |
| CWE-ID | CWE-457 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
SUSE MicroOS Operating systems & Components / Operating system SUSE Linux Enterprise Module for Basesystem Operating systems & Components / Operating system libcurl4-32bit-debuginfo Operating systems & Components / Operating system package or component libcurl4-32bit Operating systems & Components / Operating system package or component libcurl-devel Operating systems & Components / Operating system package or component libcurl4-debuginfo Operating systems & Components / Operating system package or component libcurl4 Operating systems & Components / Operating system package or component curl-debugsource Operating systems & Components / Operating system package or component curl-debuginfo Operating systems & Components / Operating system package or component curl Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Use of uninitialized variable
EUVDB-ID: #VU53587
Risk: Medium
CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-22898
CWE-ID:
CWE-457 - Use of Uninitialized Variable
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to usage of uninitialized variable in code, responsible for processing TELNET requests when parsing NEW_ENV variables. A remote attacker can force the affected application to connect to a telnet server under attackers control and read up to 1800 bytes from the uninitialized memory on the libcurl client system.
Proof of concept:
curl telnet://example.com -tNEW_ENV=a,bbbbbb (256 'b's)Update the affected package curl to the latest version.
Vulnerable software versionsSUSE MicroOS: 5.0
SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3
libcurl4-32bit-debuginfo: before 7.66.0-4.17.1
libcurl4-32bit: before 7.66.0-4.17.1
libcurl-devel: before 7.66.0-4.17.1
libcurl4-debuginfo: before 7.66.0-4.17.1
libcurl4: before 7.66.0-4.17.1
curl-debugsource: before 7.66.0-4.17.1
curl-debuginfo: before 7.66.0-4.17.1
curl: before 7.66.0-4.17.1
CPE2.3- cpe:2.3:o:suse:suse_microos:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP3:*:*:*:*:*:*:*
- cpe:2.3:a:suse:libcurl4-32bit-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libcurl4-32bit:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libcurl-devel:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libcurl4-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libcurl4:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:curl-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:curl-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:curl:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20211762-1/
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.
