cve-2024-39561
Vulnerability from cvelistv5
Published
2024-07-10 22:46
Modified
2024-08-02 04:26
Severity ?
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
EPSS score ?
Summary
Junos OS: SRX4600, SRX5000 Series: TCP packets with SYN/FIN or SYN/RST are transferred after enabling no-syn-check with Express Path
References
Impacted products
| ▼ | Vendor | Product |
|---|---|---|
| Juniper Networks | Junos OS |
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"value": "This issue only affects systems with both no-syn-check and Express Path enabled:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[set security flow tcp-session no-syn-check]\u003cbr\u003e\u003cbr\u003e[set security forwarding-options services-offload enable]\u003c/tt\u003e\u003cbr\u003e(This can also be enabled per security policy)\u003cbr\u003e\u003cbr\u003e\u003cb\u003eNote:\u003c/b\u003e\u0026nbsp;Automated Express Path is enabled by default starting with Junos OS 21.2R1."
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"value": "\u003cbr\u003e\n\u003cbr\u003eAn Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on \n\nSRX4600 and SRX5000 Series\n\n allows an attacker to send TCP packets with \n\nSYN/FIN or SYN/RST\n\n flags, bypassing the expected blocking of these packets.\u003cbr\u003e\u003cbr\u003eA TCP packet with SYN/FIN or SYN/RST should be dropped in flowd. However, when no-syn-check and Express Path\u0026nbsp;are enabled, these TCP packets are unexpectedly transferred to the downstream network.\u003cbr\u003e\u003cbr\u003e\u003cp\u003eThis issue affects Junos OS on SRX4600 and SRX5000 Series: \u003cbr\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions before 21.2R3-S8, \u003c/li\u003e\u003cli\u003efrom 21.4 before 21.4R3-S7, \u003c/li\u003e\u003cli\u003efrom 22.1 before 22.1R3-S6, \u003c/li\u003e\u003cli\u003efrom 22.2 before 22.2R3-S4, \u003c/li\u003e\u003cli\u003efrom 22.3 before 22.3R3-S3, \u003c/li\u003e\u003cli\u003efrom 22.4 before 22.4R3-S2, \u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2, \u003c/li\u003e\u003cli\u003efrom 23.4 before 23.4R1-S1, 23.4R2.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cbr\u003e\u003cbr\u003e"
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"title": "Junos OS: SRX4600, SRX5000 Series: TCP packets with SYN/FIN or SYN/RST are transferred after enabling no-syn-check with Express Path",
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.