CVE-2023-45578
Published: 16 October 2023
Summary
CVE-2023-45578 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, including DI-7003GV2.D1 versions 23.08.25D1 and earlier, DI-7100G+V2.D1 versions 23.08.23D1 and earlier, DI-7100GV2.D1 v.23.08.23D1, DI-7200G+V2.D1 versions 23.08.23D1 and earlier, DI-7200GV2.E1 versions 23.08.23E1 and earlier, DI-7300G+V2.D1 v.23.08.23D1, and DI-7400G+V2.D1 versions 23.08.23D1 and earlier. The flaw, tracked as CWE-787, resides in the pppoe_base.asp function and is triggered by the pap_en or chap_en parameter, permitting an out-of-bounds write.
Remote attackers without authentication can exploit the issue over the network to execute arbitrary code on affected devices. The vulnerability carries a CVSS 3.1 score of 9.8, reflecting critical impact across confidentiality, integrity, and availability.
Public references consist of GitHub submissions that document the bug but contain no official advisories, patch information, or mitigation guidance. The associated EPSS score shows only minor movement between a current value of 0.0810 and a peak of 0.0912.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-49870
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 pap_en/chap_en parameter of the pppoe_base.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.