Out-of-bounds write in tcpdump
Priority LOW 30CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
The SMB protocol decoder in tcpdump version 4.99.3 can perform an out-of-bounds write when decoding a crafted network packet.
Why it matters now
EPSS 0.00841 58th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| The Tcpdump Group | tcpdump | 4.99.3 | — | No fix listed | CNA |
- tcpdump VendorThe Tcpdump Group Affected 4.99.3 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:tcpdump:tcpdump:4.99.3:*:*:*:*:*:*:* | 4.99.3 | Vulnerable | The Tcpdump Group |
- cpe:2.3:a:tcpdump:tcpdump:4.99.3:*:*:*:*:*:*:* Versions 4.99.3 Vulnerable ·The Tcpdump Group
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
Not affected: 2 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2023-1801
- 2026-10-03 Alias added: GHSA-44xc-f95p-5vmh
References
Patch 2
Other 5
- https://lists.fedoraproject.org/archives/list/[email protected]/message/KOA2BJFERAC3VRQIRHJOWN4HZY4ZA7CH/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/WYL5DEVHRJYF2CM5LTCZKEYFYDZAIZSN/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZLLZCG23MU6O4QOG2CX3DLEL3YXP6LAI/
- https://support.apple.com/kb/HT213844
- https://support.apple.com/kb/HT213845
More The Tcpdump Group Tcpdump vulnerabilities
- TI-2007-03684 Integer overflow in print-bgp.c in the BGP dissector in tcpdump 3.9.6 and earlier allows… CVSS 3.1CRITICAL 9.8
- TI-2004-00159 Integer underflow in the isakmp_id_print for TCPDUMP 3.8.1 and earlier allows remote… CVSS 2.0MEDIUM 5.0
- TI-2018-10700 The BGP parser in tcpdump before 4.9.3 has a buffer over-read in… CVSS 3.1CRITICAL 9.8
- TI-2017-09693 The RPKI-Router parser in tcpdump before 4.9.2 has a buffer over-read in print-rpki-rtr.c:rpki_rtr_pdu_print(). CVSS 3.1CRITICAL 9.8
- TI-2017-09684 The ICMPv6 parser in tcpdump before 4.9.2 has a buffer over-read in print-icmp6.c:icmp6_nodeinfo_print(). CVSS 3.1CRITICAL 9.8
- TI-2017-09683 The MPTCP parser in tcpdump before 4.9.2 has a buffer over-read in print-mptcp.c, several functions. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2023-1801 · CVE Program
- CVE-2023-1801 · NVD
- FIRST EPSS
- GHSA-44xc-f95p-5vmh · GitHub Advisory Database · CC BY 4.0
- CVE-2023-1801 · Red Hat security data · CC BY 4.0
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