PT-2023-4827 · Freebsd · Freebsd

Enrico Bassetti · Publicado 2023-09-06 · Atualizado 2025-02-13 · CVE-2023-4809

Positive Technologies (AI Summary)

CVSS v2.0

10

Alta

Vetor base

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

Name of the Vulnerable Software and Affected Versions FreeBSD (affected versions not specified)

Description The issue is related to errors in the packet filter component of FreeBSD, specifically with the 'scrub fragment reassemble' rule. This can allow a remote attacker to bypass existing firewall rules by manipulating IPv6 fragmented packets. As a result, IPv6 fragments may bypass pf firewall rules and be forwarded or processed by the host.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Race Condition

Enumeração de Fraquezas

CWE-362

CWE-167

Identificadores relacionados

BDU:2023-05300

CVE-2023-4809

FREEBSD-SA-23_10

Produtos afetados

Freebsd

Referências · 21

• https://freebsd.org/security/advisories/FreeBSD-SA-23:10.pf.asc · Nota
• https://twitter.com/nixcraft/status/1700232906265002450 · Publicação no Twitter
• https://osv.dev/vulnerability/CVE-2023-4809 · Aviso do Fabricante
• https://t.me/opennews/11892 · Publicação no Telegram
• https://twitter.com/oss_security/status/1700317744762380721 · Publicação no Twitter
• https://twitter.com/ksg93rd/status/1702040136358191448 · Publicação no Twitter
• http://openwall.com/lists/oss-security/2023/09/08/6 · Nota
• https://twitter.com/oss_security/status/1700228670399598748 · Publicação no Twitter
• http://openwall.com/lists/oss-security/2023/09/08/7 · Nota
• https://twitter.com/oss_security/status/1700317737833341055 · Publicação no Twitter
• https://t.me/cvenotify/57680 · Publicação no Telegram
• https://nvd.nist.gov/vuln/detail/CVE-2023-4809 · Nota de Segurança
• https://security.netapp.com/advisory/ntap-20231221-0009 · Nota
• https://t.me/cvenotify/111258 · Publicação no Telegram
• https://t.me/cybersecuritytechnologies/9015 · Publicação no Telegram