CVE-2019-19203
HIGH
7.5
CVSS Score
Published: November 21, 2019 at 08:06 PM UTC
Updated: June 17, 2026 at 02:26 AM UTC
2 products affected across 2 vendorsFedoraOniguruma
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Severity
HIGH7.5
Exploit prediction
EPSS 4%
Description
An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string. This leads to a heap-based buffer over-read.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
6.0.0 ≤ v < 6.9.46.9.4 rc1
Affected range stops below 6.9.4, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/kkos/oniguruma/issues/163
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NO267PLHGYZSWX3XTRPKYBKD4J3YOU5V/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V3MBNW6Z4DOXSCNWGBLQ7OA3OGUJ44WL/
References (6)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/ManhNDd/CVE-2019-19203x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://github.com/kkos/oniguruma/issues/163x_refsource_MISCRelease Notes
Source: [email protected]
https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/tarantula-team/CVE-2019-19203Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NO267PLHGYZSWX3XTRPKYBKD4J3YOU5V/Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V3MBNW6Z4DOXSCNWGBLQ7OA3OGUJ44WL/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-125
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