openEuler 20.03 LTS SP1 update for curl

1) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU72337

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-2023-23916

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

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

The vulnerability exists due to incorrect implementation of the "chained" HTTP compression algorithms, where the number of links in the decompression chain was limited for each header instead of the entire request. A remote attacker can send a specially crafted compressed HTTP request with numerous headers and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1

curl-help: before 7.71.1-20

libcurl: before 7.71.1-20

curl-debugsource: before 7.71.1-20

curl-debuginfo: before 7.71.1-20

libcurl-devel: before 7.71.1-20

curl: before 7.71.1-20

CPE2.3

• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:a:openeuler:curl-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libcurl:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:curl-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:curl-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libcurl-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:curl:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1122

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.