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    CVE-2019-13636

    In GNU patch through 2.7.6, the following of symlinks is mishandled in certain cases other than input files. This affects inp.c and util.c.

    Published:Jul 17, 2019
    Last Modified:Nov 21, 2024
    EPS:Jul 17, 2019
    EPSS Score:0.04407
    CVSS Score:5.9

    Affected Products

    Vendor
    Gnu
    Product
    Patch
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-56289 (CVSS 4.6) — GNU patch is vulnerable to a denial of service (DoS) due to improper validation of hunk (single block of chang…
    CVE-2026-56288 (CVSS 4.6) — GNU patch is vulnerable to a NULL pointer dereference when processing a specially crafted unified-diff patch f…
    CVE-2021-45261 (CVSS 5.5) — An Invalid Pointer vulnerability exists in GNU patch 2.7 via the another_hunk function, which causes a Denial …
    CVE-2018-20969 (CVSS 7.8) — do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: th…
    CVE-2019-20633 (CVSS 5.5) — GNU patch through 2.7.6 contains a free(p_line[p_end]) Double Free vulnerability in the function another_hunk …
    CVE-2019-13638 (CVSS 7.8) — GNU patch through 2.7.6 is vulnerable to OS shell command injection that can be exploited by opening a crafted…
    CVE-2018-1000156 (CVSS 7.8) — GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically t…
    CVE-2016-10713 (CVSS 5.5) — An issue was discovered in GNU patch before 2.7.6. Out-of-bounds access within pch_write_line() in pch.c can p…
    CVE-2018-6952 (CVSS 7.5) — A double free exists in the another_hunk function in pch.c in GNU patch through 2.7.6.…
    CVE-2018-6951 (CVSS 7.5) — An issue was discovered in GNU patch through 2.7.6. There is a segmentation fault, associated with a NULL poin…

    References

    http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html
    https://git.savannah.gnu.org/cgit/patch.git/commit/?id=dce4683cbbe107a95f1f0d45fabc304acfb5d71a
    https://github.com/irsl/gnu-patch-vulnerabilities
    https://lists.debian.org/debian-lts-announce/2019/07/msg00016.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVWWGISFWACROJJPVJJL4UBLVZ7LPOLT/
    https://seclists.org/bugtraq/2019/Aug/29
    https://seclists.org/bugtraq/2019/Jul/54
    https://security.gentoo.org/glsa/201908-22
    https://security.netapp.com/advisory/ntap-20190828-0001/
    https://usn.ubuntu.com/4071-1/
    https://usn.ubuntu.com/4071-2/
    https://www.debian.org/security/2019/dsa-4489
    http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html
    https://git.savannah.gnu.org/cgit/patch.git/commit/?id=dce4683cbbe107a95f1f0d45fabc304acfb5d71a
    https://github.com/irsl/gnu-patch-vulnerabilities
    https://lists.debian.org/debian-lts-announce/2019/07/msg00016.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVWWGISFWACROJJPVJJL4UBLVZ7LPOLT/
    https://seclists.org/bugtraq/2019/Aug/29
    https://seclists.org/bugtraq/2019/Jul/54
    https://security.gentoo.org/glsa/201908-22
    https://security.netapp.com/advisory/ntap-20190828-0001/
    https://usn.ubuntu.com/4071-1/
    https://usn.ubuntu.com/4071-2/
    https://www.debian.org/security/2019/dsa-4489

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High