Vulnerability · Published Dec 11, 2020 · Assigned by mitre
CVE-2020-17437
High 8.2
In plain English
A high-severity security flaw in the open-iscsi package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.9% (higher than 87% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configured to ignore the urgent data, the stack attempts to use the value of the Urgent pointer bytes to separate the Urgent data from the normal data, by calculating the offset at which the normal data should be present in the global buffer. However, the length of this offset is not checked; therefore, for large values of the Urgent pointer bytes, the data pointer can point to memory that is way beyond the data buffer in uip_process in uip.c.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | open-iscsi | 2.1.3-1 | DEBIAN-CVE-2020-17437 |
| Debian:13 | open-iscsi | 2.1.3-1 | DEBIAN-CVE-2020-17437 |
| Debian:14 | open-iscsi | 2.1.3-1 | DEBIAN-CVE-2020-17437 |
Affected products (as reported)
References
- https://www.kb.cert.org/vuls/id/815128 x_refsource_MISC
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 x_refsource_MISC
- https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf x_refsource_CONFIRM