CVE-2024-38440
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-38440
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38440.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-38440
- Downstream
- Related
- Published
- 2024-06-16T13:15:53Z
- Modified
- 2025-07-29T11:13:03.982023Z
- Summary
- [none]
- Details
-
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 BNbin2bn in etc/uams/uamsdhxpam.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 BNbin2bn function found in /etc/uams/uamsdhxpam.c ... if (!(bn = BNbin2bn((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] ... afploginext(obj=<optimized out>, ibuf=0x62d000010424 "", ibuflen=0xffffffffffff0015, rbuf=<optimized out>, rbuflen=<optimized out>) ... afpover_dsi(obj=0x5555556154c0 <obj>).' 2.4.1 and 3.1.19 are also fixed versions.
- References
-
- https://github.com/Netatalk/netatalk/security/advisories/GHSA-mxx4-9fhm-r3w5
- https://netatalk.io/security/CVE-2024-38440
- https://github.com/Netatalk/netatalk/issues/1097
- https://github.com/Netatalk/netatalk/blob/90d91a9ac9a7d6132ab7620d31c8c23400949206/etc/uams/uams_dhx_pam.c#L199-L200
- https://security-tracker.debian.org/tracker/CVE-2024-38440
Affected packages
Debian:11 / netatalk
Package
- Name
- netatalk
- Purl
- pkg:deb/debian/netatalk?arch=source
Debian:13 / netatalk
Package
- Name
- netatalk
- Purl
- pkg:deb/debian/netatalk?arch=source