by Kastro
Paper/Archive/CVE-2022-23852

CVE-2022-23852

Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP — Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.

EPSS 5%CVSS 9.8
critical.is priorityof 100
48
CVSS 9.8 (ADP, NVD agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 92.3.923 × 2018.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.

Affected

ProductAffectedFixed inSource
n/an/a–CNA
SIMATIC S7-1500 CPU 1518-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP
SIMATIC S7-1500 CPU 1518-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP
SIPLUS S7-1500 CPU 1518-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/libexpat/libexpat/pull/550advisorydebian.org/security/2022/dsa-5073reflists.debian.org/debian-lts-announce/2022/03/msg00007.htmlreforacle.com/security-alerts/cpuapr2022.htmlreftenable.com/security/tns-2022-05refsecurity.netapp.com/advisory/ntap-20220217-0001refcert-portal.siemens.com/productcert/pdf/ssa-484086.pdfadvisorysecurity.gentoo.org/glsa/202209-24refcert-portal.siemens.com/productcert/html/ssa-484086.htmlrefcert-portal.siemens.com/productcert/html/ssa-398330.html