CVE-2018-18557
LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 (with JBIG enabled) decodes arbitrarily-sized JBIG into a buffer, ignoring…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 15.0%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 (with JBIG enabled) decodes arbitrarily-sized JBIG into a buffer, ignoring the buffer size, which leads to a tif_jbig.c JBIGDecode out-of-bounds write.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 14.96% probability · 97th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 25 October 2018
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- libtiff/libtiff · debian/debian linux · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS moved from 13.1% on 21 September 2026 to 15.0% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://access.redhat.com/errata/RHSA-2019:2053
- https://github.com/Hack-Me/Pocs_for_Multi_Versions/tree/main/CVE-2018-18557
- https://gitlab.com/libtiff/libtiff/commit/681748ec2f5ce88da5f9fa6831e1653e46af8a66
- https://gitlab.com/libtiff/libtiff/merge_requests/38Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00019.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201904-15
- https://usn.ubuntu.com/3864-1/Third Party Advisory
- https://usn.ubuntu.com/3906-2/
- https://www.debian.org/security/2018/dsa-4349Third Party Advisory
- https://www.exploit-db.com/exploits/45694/Exploit, Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2053
- https://github.com/Hack-Me/Pocs_for_Multi_Versions/tree/main/CVE-2018-18557
- https://gitlab.com/libtiff/libtiff/commit/681748ec2f5ce88da5f9fa6831e1653e46af8a66
- https://gitlab.com/libtiff/libtiff/merge_requests/38Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00019.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201904-15
- https://usn.ubuntu.com/3864-1/Third Party Advisory
- https://usn.ubuntu.com/3906-2/
- https://www.debian.org/security/2018/dsa-4349Third Party Advisory
- https://www.exploit-db.com/exploits/45694/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.