Use-after-free in libarchive (Alpine package)
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-18408 |
| CWE-ID | CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
libarchive (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU22332
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-18408
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the archive_read_format_rar_read_data() function in archive_read_support_format_rar.c in libarchive when handling certain ARCHIVE_FAILED situation, related to Ppmd7_DecodeSymbol. A remote attacker can create a specially crafted archive, pass it to the affected application trigger a use-after-free error and crash the application or execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall update from vendor's website.
Vulnerable software versionslibarchive (Alpine package): 3.0.2-r0 - 3.4.0-r0
CPE2.3- cpe:2.3:o:alpine:libarchive_alpine_package:3.3.3-r0:*:*:*:*:alpine_linux:*:
- cpe:2.3:o:alpine:libarchive_alpine_package:3.2.2-r0:*:*:*:*:alpine_linux:*:
- cpe:2.3:o:alpine:libarchive_alpine_package:3.1.2-r0:*:*:*:*:alpine_linux:*:
http://git.alpinelinux.org/aports/commit/?id=02b0001e987edf632c25303d284508c6e8702a16
http://git.alpinelinux.org/aports/commit/?id=05f80bc8c49760714cad169f99ea7962086e3048
http://git.alpinelinux.org/aports/commit/?id=3d9a3dc5dd0d1828bd2675f6596bd5a748acad9b
http://git.alpinelinux.org/aports/commit/?id=1d79155e9beac31b949f29acb3ae3a9a7a7b6edb
http://git.alpinelinux.org/aports/commit/?id=2fd4d3cdac0b6fe47662ae7063ecc0dbb5f1189e
http://git.alpinelinux.org/aports/commit/?id=b4b6746d1b8a622f25d0a49940777c260057f980
http://git.alpinelinux.org/aports/commit/?id=ccb5121a91f694dcd292b52d118a6230ced3d6e4
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
