PT-2019-5786 · Cdata · Cdata

Alexandre Torres + 2 · Published 2019-12-27 · Updated 2021-03-11 · CVE-2020-29057

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions CDATA devices versions 72408A, 9008A, 9016A, 92408A, 92416A, 9288, 97016, 97024P, 97028P, 97042P, 97084P, 97168P, FD1002S, FD1104, FD1104B, FD1104S, FD1104SN, FD1108S, FD1204S-R2, FD1204SN, FD1204SN-R2, FD1208S-R2, FD1216S-R1, FD1608GS, FD1608SN, FD1616GS, FD1616SN, FD8000

Description The issue allows remote attackers to cause a denial of service (reboot) by sending random bytes to the telnet server on port 23, also known as a "shawarma" attack. It is related to incorrect resource release.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the telnet server on port 23 to minimize the risk of exploitation.

Exploit

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

BDU:2021-02149

CVE-2020-29057

Affected Products

Cdata

References · 7

• 🔥 https://pierrekim.github.io/blog/2020-07-07-cdata-olt-0day-vulnerabilities.html · Exploit
• https://bdu.fstec.ru/vul/2021-02149 · Security Note
• https://osv.dev/vulnerability/CVE-2020-29057 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-29057 · Security Note
• https://t.me/cibsecurity/16823 · Telegram Post
• https://securitylab.ru/news/509964.php · Note
• https://t.me/cvenotify/6164 · Telegram Post