Integer underflow in the Lists_MakeMask() function in lists.c in ngIRCd before 0.8.2 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a long MODE line that causes an incorrect length calculation, which leads to a buffer overflow.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | 3.9 | 5.9 |
CVSS 2.0
Severity: HIGH
Problem Type: CWE-191,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| barton | ngircd | * |
The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a "notice auth" message not being sent to a new client.
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-20,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| barton | ngircd | 18.0 |
| barton | ngircd | 20.0 |
| barton | ngircd | 19.0 |
| barton | ngircd | 19.1 |
| barton | ngircd | 20.1 |
| barton | ngircd | 20.2 |
The Server-Server protocol implementation in ngIRCd before 26~rc2 allows an out-of-bounds access, as demonstrated by the IRC_NJOIN() function.
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-125,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| barton | ngircd | 26.0 |
| fedoraproject | fedora | 32 |
| debian | debian_linux | 8.0 |
| barton | ngircd | * |
| fedoraproject | fedora | 31 |