# CVE-2023-28879: CVE-2023-28879

- Exploited (CISA KEV): no
- Published: 2023-03-31
- CVSS: 9.8 CRITICAL (v3.1)
- EPSS: 6.3% (94th percentile)

In Artifex Ghostscript through 10.01.0, there is a buffer overflow leading to potential corruption of data internal to the PostScript interpreter, in base/sbcp.c. This affects BCPEncode, BCPDecode, TBCPEncode, and TBCPDecode. If the write buffer is filled to one byte less than full, and one then tries to write an escaped character, two bytes are written.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2023-06-06 | 67 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2023-06-06 · new · rule 200011092
  > Added: signature 200011092 "Artifex Ghostscript Buffer Overflow" (Buffer Overflow, risk High), systems: Unix/Linux. References: CVE-2023-28879.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2023-12-12 · updated · rule 200011092
  > Updated: signature 200011092 "Artifex Ghostscript Buffer Overflow" (Buffer Overflow, risk High), systems: Unix/Linux. References: CVE-2023-28879.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2023-28879 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2023-28879