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OESA-2023-1465 (CVE-2021-45960)
Vulnerability from osv_openeuler – Published: 2023-08-06 11:05 – Updated: 2026-08-06 11:05 – Source website
VLAI
Summary
firefox security update
Details
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.
Security Fix(es):
In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).(CVE-2021-45960)
In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.(CVE-2021-46143)
lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.(CVE-2022-22825)
nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.(CVE-2022-22826)
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.(CVE-2022-22827)
Severity
8.8 (High)
References
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"id": "OESA-2023-1465",
"modified": "2026-08-06T11:05:55Z",
"published": "2023-08-06T11:05:55Z",
"references": [
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CVE-2021-45960 (GCVE-0-2021-45960)
Vulnerability from cvelistv5 – Published: 2022-01-01 18:47 – Updated: 2025-05-05 16:45
VLAI
EPSS
VEX
Summary
In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:29 UTC
CWE
- n/a
- CWE-682 - Incorrect Calculation
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/issues/531 | x_refsource_MISC |
| https://github.com/libexpat/libexpat/pull/534 | x_refsource_MISC |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1217609 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2022012… | x_refsource_CONFIRM |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5073 | vendor-advisoryx_refsource_DEBIAN |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/202209-24 | vendor-advisoryx_refsource_GENTOO |
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CVE-2021-46143 (GCVE-0-2021-46143)
Vulnerability from cvelistv5 – Published: 2022-01-06 03:48 – Updated: 2025-05-05 16:44
VLAI
EPSS
VEX
Summary
In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:17 UTC
CWE
- n/a
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/issues/532 | x_refsource_MISC |
| https://github.com/libexpat/libexpat/pull/538 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2022012… | x_refsource_CONFIRM |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5073 | vendor-advisoryx_refsource_DEBIAN |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/202209-24 | vendor-advisoryx_refsource_GENTOO |
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CVE-2022-22825 (GCVE-0-2022-22825)
Vulnerability from cvelistv5 – Published: 2022-01-08 02:56 – Updated: 2025-05-05 16:29
VLAI
EPSS
VEX
Summary
lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:31 UTC
CWE
- n/a
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
6 references
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|---|---|
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| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
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CVE-2022-22826 (GCVE-0-2022-22826)
Vulnerability from cvelistv5 – Published: 2022-01-08 02:56 – Updated: 2025-05-05 16:29
VLAI
EPSS
VEX
Summary
nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:31 UTC
CWE
- n/a
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/pull/539 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5073 | vendor-advisoryx_refsource_DEBIAN |
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CVE-2022-22827 (GCVE-0-2022-22827)
Vulnerability from cvelistv5 – Published: 2022-01-08 02:56 – Updated: 2025-05-05 16:28
VLAI
EPSS
VEX
Summary
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:31 UTC
CWE
- n/a
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/pull/539 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/17/3 | mailing-listx_refsource_MLIST |
| https://www.tenable.com/security/tns-2022-05 | x_refsource_CONFIRM |
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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