Netgear R8500 v1.0.2.160, XR300 v1.0.3.78, R7000P v1.3.3.154, and R6400 v2 1.0.4.128 were discovered to contain a stack overflow via the ppt

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• netgear r6400v2 firmware1.0.4.128
• netgear r7000p firmware1.3.3.154
• netgear r8500 firmware1.0.2.160
• netgear xr300 firmware1.0.3.78

Other highest-scoring records for the same primary product.

• CVE-2022-27947NETGEAR R8500 1.0.2.158 devices allow remote authenticated users to execute arbitrary commands (such as telnetd) via shell metacharacters in
  36Monitor
• CVE-2022-27946NETGEAR R8500 1.0.2.158 devices allow remote authenticated users to execute arbitrary commands (such as telnetd) via shell metacharacters in
  36Monitor
• CVE-2022-27945NETGEAR R8500 1.0.2.158 devices allow remote authenticated users to execute arbitrary commands (such as telnetd) via shell metacharacters in
  36Monitor
• CVE-2019-20739NETGEAR R8500 devices before v1.0.2.128 are affected by a buffer overflow by an unauthenticated attacker.
  35Monitor
• CVE-2024-52022Netgear R8500 v1.0.2.160, XR300 v1.0.3.78, R7000P v1.3.3.154, and R6400 v2 1.0.4.128 were discovered to contain a command injection vulnerab
  32Monitor
• CVE-2024-52021Netgear R8500 v1.0.2.160 was discovered to contain a command injection vulnerability in the wan_gateway parameter at bsw_fix.cgi.
  32Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1char buf[256];2memcpy(buf, pkt->data, pkt->len);

1char buf[256];2if (pkt->len > sizeof(buf)) {3  return -EINVAL;4}5memcpy(buf, pkt->data, pkt->len);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.