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TI-2024-25690 Aliases CVE-2024-38440GHSA-52mm-rqxx-gfq6

Netatalk before 3.2.1 has an off-by-one error, and resultant heap-based buffer overflow…

Priority HIGH 72CWE-193Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-193 and the CVSS impact.

Summary

Netatalk before 3.2.1 has an off-by-one error, and resultant heap-based buffer overflow and segmentation violation, because of incorrectly using FPLoginExt in BN_bin2bn in etc/uams/uams_dhx_pam.c. The original issue 1097 report stated: 'The latest version of Netatalk (v3.2.0) contains a security vulnerability. This vulnerability arises due to a lack of validation for the length field after parsing user-provided data, leading to an out-of-bounds heap write of one byte (\0). Under specific configurations, this can result in reading metadata of the next heap block, potentially causing a Denial of Service (DoS) under certain heap layouts or with ASAN enabled. ... The vulnerability is located in the FPLoginExt operation of Netatalk, in the BN_bin2bn function found in /etc/uams/uams_dhx_pam.c ... if (!(bn = BN_bin2bn((unsigned char *)ibuf, KEYSIZE, NULL))) ... threads ... [#0] Id 1, Name: "afpd", stopped 0x7ffff4304e58 in ?? (), reason: SIGSEGV ... [#0] 0x7ffff4304e58 mov BYTE PTR [r14+0x8], 0x0 ... mov rdx, QWORD PTR [rsp+0x18] ... afp_login_ext(obj=<optimized out>, ibuf=0x62d000010424 "", ibuflen=0xffffffffffff0015, rbuf=<optimized out>, rbuflen=<optimized out>) ... afp_over_dsi(obj=0x5555556154c0 <obj>).' 2.4.1 and 3.1.19 are also fixed versions.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0088 59th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:*2.0.0 to before 2.4.1; 3.0 to before 3.1.19VulnerableNetatalk
cpe:2.3:a:netatalk:netatalk:3.2.0:*:*:*:*:*:*:*3.2.0VulnerableNetatalk
  • cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:* Versions 2.0.0 to before 2.4.1; 3.0 to before 3.1.19 Vulnerable ·Netatalk
  • cpe:2.3:a:netatalk:netatalk:3.2.0:*:*:*:*:*:*:* Versions 3.2.0 Vulnerable ·Netatalk

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-38440
  2. 2026-10-03 Alias added: GHSA-52mm-rqxx-gfq6

References

Exploit 1

Advisory 1

Other 2

  • TI-2018-01076 Out-of-bounds write in Netatalk CVSS 3.1CRITICAL 9.8
  • TI-2024-25689 Netatalk before 3.2.1 has an off-by-one error and resultant heap-based buffer overflow… CVSS 3.1CRITICAL 9.8
  • TI-2022-22254 Netatalk through 3.1.13 has an afp_getappl heap-based buffer overflow resulting in code… CVSS 3.1HIGH 7.8
  • TI-2022-21402 Heap-based buffer overflow in Netatalk CVSS 3.1CRITICAL 9.8
  • TI-2022-07290 Improper handling of exceptional conditions in Netatalk CVSS 3.1CRITICAL 9.8
  • TI-2024-25691 Netatalk before 3.2.1 has an off-by-one error and resultant heap-based buffer overflow… CVSS 3.1CRITICAL 9.8
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences