CVE-2023-45576
Published: 16 October 2023
Summary
CVE-2023-45576 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Dlink Di-7003G Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 7.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A buffer overflow vulnerability affects multiple D-Link router models, specifically DI-7003GV2.D1 v.23.08.25D1 and earlier, DI-7100G+V2.D1 v.23.08.23D1 and earlier, DI-7100GV2.D1 v.23.08.23D1, DI-7200G+V2.D1 v.23.08.23D1 and earlier, DI-7200GV2.E1 v.23.08.23E1 and earlier, DI-7300G+V2.D1 v.23.08.23D1, and DI-7400G+V2.D1 v.23.08.23D1 and earlier. The flaw resides in the upnp_ctrl.asp function and is triggered via the remove_ext_proto or remove_ext_port parameters, corresponding to CWE-787 out-of-bounds writes.
Unauthenticated remote attackers can exploit the issue over the network without user interaction or credentials to achieve arbitrary code execution, consistent with the CVSS 9.8 rating that reflects full impact across confidentiality, integrity, and availability.
The referenced GitHub submissions document the vulnerability details but contain no information on vendor patches, firmware updates, or other mitigations.
The associated EPSS values remain in a narrow band between a current score of 0.0810 and a peak of 0.0912, with no indication of broader in-the-wild exploitation.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-49868
Vulnerability details
Buffer Overflow vulnerability in D-Link device DI-7003GV2.D1 v.23.08.25D1 and before, DI-7100G+V2.D1 v.23.08.23D1 and before, DI-7100GV2.D1 v.23.08.23D1, DI-7200G+V2.D1 v.23.08.23D1 and before, DI-7200GV2.E1 v.23.08.23E1 and before, DI-7300G+V2.D1 v.23.08.23D1, and DI-7400G+V2.D1 v.23.08.23D1 and before allows a remote attacker to execute arbitrary code via…
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the remove_ext_proto/remove_ext_port parameter of the upnp_ctrl.asp function.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.