Critical severity9.8NVD Advisory· Published Dec 11, 2020· Updated Jun 17, 2026
CVE-2020-17438
CVE-2020-17438
Description
An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that reassembles fragmented packets fails to properly validate the total length of an incoming packet specified in its IP header, as well as the fragmentation offset value specified in the IP header. By crafting a packet with specific values of the IP header length and the fragmentation offset, attackers can write into the .bss section of the program (past the statically allocated buffer that is used for storing the fragmented data) and cause a denial of service in uip_reass() in uip.c, or possibly execute arbitrary code on some target architectures.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
25- Range: = 3.0
- osv-coords23 versionspkg:rpm/suse/open-iscsi&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Micro%205.0pkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP2pkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP3pkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/open-iscsi&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/open-iscsi&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/open-iscsi&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/open-iscsi&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/open-iscsi&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/open-iscsi&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 2.0.876-13.42.1+ 22 more
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.1.4-22.14.1
- (no CPE)range: < 2.1.4-22.14.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-12.27.2
- (no CPE)range: < 2.0.876-12.27.2
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-12.27.2
- (no CPE)range: < 2.0.876-12.27.2
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-13.42.1
- (no CPE)range: < 2.0.876-12.27.2
- (no CPE)range: < 2.0.876-12.27.2
Patches
Vulnerability mechanics
References
2- us-cert.cisa.gov/ics/advisories/icsa-20-343-01nvdThird Party AdvisoryUS Government Resource
- www.kb.cert.org/vuls/id/815128nvdThird Party AdvisoryUS Government Resource
News mentions
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