CVE-2016-2123
01.11.2018, 13:29
A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attacker-controlled memory overwrite. ndr_pull_dnsp_name parses data from the Samba Active Directory ldb database. Any user who can write to the dnsRecord attribute over LDAP can trigger this memory corruption. By default, all authenticated LDAP users can write to the dnsRecord attribute on new DNS objects. This makes the defect a remote privilege escalation.Enginsight
| Vendor | Product | Version |
|---|---|---|
| samba | samba | 4.0.0 ≤ 𝑥 ≤ 4.0.26 |
| samba | samba | 4.1.0 ≤ 𝑥 ≤ 4.1.23 |
| samba | samba | 4.2.0 ≤ 𝑥 ≤ 4.2.14 |
| samba | samba | 4.3.0 ≤ 𝑥 < 4.3.13 |
| samba | samba | 4.4.0 ≤ 𝑥 < 4.4.8 |
| samba | samba | 4.5.0 ≤ 𝑥 < 4.5.3 |
𝑥
= Vulnerable software versions
Debian Releases
Ubuntu Releases
Common Weakness Enumeration
- CWE-122 - Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory BufferThe software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
References